If you tee into the hose going to the FPR and a leak develops somewhere in your boost gauge/EBC then the FPR won't get the correct boost signal. ***All information refers to S13 engines unless specified otherwise.***. Turbo engines are a different story. Hook up your timing light and see where you're at, rotate the cas until you're on the mark. It should take a couple seconds before pressure goes to zero and the engine dies. Sometimes they will barely idle. The picture below is the crankshaft marks that need to be lined up before you remove the timing belt. Top dead enter with links matched up with notches on the cam sprockets - check. If you've snipped a plug from a wreck then you may have different coloured wires. This is just a short length of hose. line from pre-TB to Idle Air Control Valve. The Infinity ECU can be reconfigured via the Setup Wizard to properly read the 12 crank/1 cam timing pattern on engines using an AEM CAS … A quick glance occasionally while driving is all it takes to make sure you're still in the safe zone. Have repeated procedure several times and advanced / retarded one tooth either side to find that car will not run with CAS timing out. Usually there’s a fitting in the factory plumbing that hooks this line in just before the TB. One line from boost source to wastegate actuator as mentioned above. HoosierDrifter. Random general interest article on oils. Use a small jeweller's screwdriver to depress the little locking tangs - and be patient. After warmup, your engine should be idling around 850rpm – check your timing with a timing gun. Once this happens a replacement TPS is required. Nissan have provided a loop in the wiring loom that drives coil No. Not good. You'll need a Consult Cable, a laptop and some monitoring software. Faulty wiring will also do it. The other obvious thing to do is to check your fuel pressure. Take a close look at them - if they haven't bounced back to a nice round section or have cracks/nicks/perishing then don't even bother trying to re-use them as they will leak. Bad for turbo and bad for tuning! It has 6 wires. 5 minute job. Bleed fuel pressure from the system by removing the fuel pump fuse, relay or wiring to fuel pump with the engine running. HKS sprockets are alittle more expensive because they come with CAS gear for the exhaust cam. Make sure you get the line that is supplying the fuel rather than the return line to the tank. It pays to mark it with some white-out or brightly coloured paint. so ive decided to do the timing chain on my SR20DET (redtop), now on the cam gears, there are 2 circles, can anyone please help and tell me where they are supposed to be, like both top dead center?, or both of the circles facing eachother, or both pointing in a certain direction?, theres a yellow link on the timing chain, or is this irrelevant to the timing. Don't use chassis GND. Remove the center bolt in the ECU connector to unplug the connector. This guide assumes that the timing chain is installed correctly. Join our Rewards Program & save! Nissan ECU's use IGN timing to trim idle speed. Failure of this hose = dead engine. Some ECU's will learn where TPS Closed is by checking the value at startup. It opens/closes the AAC valve to allow more/less air into the engine. Double check that you have the wires in the right place. This makes them cheaper to produce ($US199 last time I checked - 16May11). Then you just watch the reported timing value live on the screen and adjust your Crank Angle Sensor until what you're seeing on the crank pulley (with your timing light) matches what's on the screen. In the morning the engine will start on 3 cylinders and it will take awhile before the affected cylinder clears. Diagram showing normal BOV operation when throttle closes, The stock BOV on most Nissans can actually be made to work very well and hold increased boost with a small modification. Installing Tomei Pon Cams (256 Degrees) Stage 1 on S13 SR20DET. Spark gap at .028 for each plug - check. Less than 15 degrees will make it very sluggish. This is why it is recommended to take the source for your boost gauge/EBC from somewhere else. R32/Z32's can be cleaned but not quite as easily because the sensing elements are not a bolt-in job. We specfically chose the Tomei Pon Cams Stage 1 cam set since it offers such a high lift without having to replace other valvetrain components. This is as simple as tee-ing a gauge into the fuel line where it enters the fuel rail. And most of the time they were right - to start with anyway. You will create your very own personal tuning hell. I'll add pics (and more information) as time permits. There is a limited number of side-feed injector manufacturers. Now you just need a power wire. and have the passenger watch it as you drive. Instead of declaring it broken and throwing it in the bin like workshops all over the world do. and solvent such as acetone or contact cleaner. You don’t get the reversion back to the AFM but the sudden rush of air to atmosphere is still being measured by the AFM so you get the big rich patch on closed throttle. remove all the pins from the Z32 connector and slip the rubber boot off, slip the rubber boot from the Z32 connector onto the SR wires, click the 3 pins on the SR loom into the right positions in the Z32 connector backshell, re-fit the rubber boot to the connector backshell. Anything leaner than 12.5:1 should be considered dangerous unless the engine has been specifically tuned for lean mixtures. Your tuner probably tuned your engine with an AFR between 11.5 and 12:1 if it's a turbo, or a tad leaner if it's NA. For S13/early S14 all you need to do is : Result : perfect job that looks like factory. We've been doing it for years with temperature and oil pressure gauges, so why not keep an eye on our AFR's? I've not met any injectors molesters in the latter category yet. Worst case the cylinder will have enough fuel in it to hydraulic lock. Use what Mr. Nissan gave you. 1 spark plug wire and battery. As if the engine isn't really trying. Connect a timing light to the No. If you can't open a tin of cat food without cutting yourself then you should probably leave this to somebody else. Far from it. If you've converted to a manual trans then it pays to also convert to a manual TPS for reliability's sake. This is the company (now owned by Bosch) that makes all the electronic components for most Nissans. The TPS in auto vehicles is notoriously unreliable. If you see any sudden changes (to 0V or 5V) then the TPS must be replaced. Check the front pulley. It has 3 pins. In the case of a non-turbo engine power will be down and if the engine is used continuously at full load it may suffer damage due to detonation and/or valve damage from high combustion temperatures. _Ricky got this from the web Posted on Sep 21, 2009 If idle speed is too low the ECU will add timing, if it's too high then it will pull timing back. You only need the White (signal), Light Green/Black (5V power) and Black (return) wires. Particularly now that cheap cabin-mount Wideband AFR meters are available. So it relies on having a "sense line" so it can see manifold pressure. They suffer from moisture ingress. Don’t tee anything else off of here. You can buy lube specially for this job but if you don't have it then use either Vaseline or engine oil. Slowly open the throttle - you should see the voltage increase smoothly to just over 4V. Then fuel pressure will be low and your SR will lean out. Why your fuel pump is critical: It's easy to think that if your fuel pump is faulty then the engine will just run out of fuel and stop. Here's a little article I put together for SR20 BOV's. If you're setting your idle from scratch then there are a few things you need to know about. This is a collection of stuff that we get asked all the time. Without it you are really in the dark. At target idle you'll see 15 degrees, if idle is too high you'll see less than 15 and if idle is too low the ECU will try to increase RPM by adding timing. The SR20DET is part of the SR family of engines from Nissan.. These are the black/white wires near the end of the connector. Note that this connector must be bolted down tightly for the connector to work - often a bit tighter than you can get with a nut driver, s… As the name suggests this lets the ECU know how far open the throttle is. This should be around 0.5V. On cars with auto trans this can easily stall the engine completely. A sticker like the one pictured may be found somewhere in the engine bay, and the ever important factory ignition timing setting. In reality timing affects idle speed - and idle speed affects timing. Clean element using a fine brush and solvent. This guide assumes that the timing chain is installed correctly. A wideband AFR (Air Fuel Ratio) meter is one of the main tools used when tuning turbo engines. If there is any doubt on the installation of the timing chain, do not proceed as damage to your pistons/valves can occur. 2. This valve simply bleeds air around the throttle body. Best way is to just splice into the ECU power. You'll find it hanging out of the loom right at the back of the head - near the firewall. Use an air filter with a bellmouth entry if possible. Then press the injectors into place. The spec is 0.35V to 0.65V but it's good to have it right in the middle. P2M Nissan clear acrylic see through CAS cover makes installing crank angle sensor on the fly without taking the cover off. Creating an extremely dangerous situation. This is because the Consult Port is part of the body loom - the plug will normally be around the fusebox inside the car. So if you need to adjust idle (you shouldn’t have to) then do it on the IACV – not the TB. SR20DET TIMING - Which CAS mark? Checking fuel pressure is inherently dangerous. There's a bit of trim that helps hold the panel in place below the glove compartment. and see how close you've got it. Unfortunately the main TPS part also goes bad very quickly. Lube up the areas on the fuel rail where the O-rings seat, as well as the O-rings themselves. It pays to mark it with some white-out or brightly coloured paint. There are some others such as Sard which work OK but are not really made to fit an SR20 - they're made to fit by using a conglomeration of oversized O-rings and adaptor rings. On some engines the canister is over the LHS and so you have a bunch of lines that run across the top of the rad from the RHS of the engine. This should be 15 degrees and this is when you take your reading. Now it's just a matter of getting the signals in the right place. So far so good. Timing indicator aligned with the second-to-the-left dot - check. Dirty airflow meters are becoming quite common now that most SR's have quite a few k's on them. 270cc for most SR20DE's, 370cc (purple) for S13/S14 SR20DET and S15 auto, 480cc (rusty brown) for S15 SR20DET manual. Firstly, turn the IGN on and let the fuel pump prime the system. This is not some internet rubbish trawled up from a forum - it happens ALL THE TIME! If you're not then your fuel pump will just get "lazy". Check TPS function : While you're playing with the TPS it's a good idea to check it across the range. The AEM Infinity ECU supports the Nissan SR20DET’s OEM Cam Angle Sensor (CAS) '360 Degree' pattern. Unfortunately this is quite common. I've got an old crusty timing light and this loop works fine with it. Below is the intake and exhaust camshaft pulley marks. It gets a bit harder if there's more than one. If not, adjust the idle screw on the idle control valve until it does. Turn the engine OFF and reconnect the throttle position sensor harness. This guide assumes that the timing chain is installed correctly. Tuned engines usually run around 12:1. The SR shaft is longer than the A-series distributor Post click for topic. You need 5 wires - 12V, GND, CLK, Receive and Transmit (no CLK on S15). Often you'll get away with it. It will also adjust ignition timing to trim idle higher/lower. The plumbing between the AFM and the turbo inlet can be critical. Don't rev it too much or you'll see timing start to increase. So it makes sense to monitor your AFR's. Enjoy. This happens quite easily. Do i Time off of #1? What you need to know is that the FPR regulates the fuel pressure based on manifold pressure. Unbolt the panel and you are then able to unbolt the ECU. Use a recirculating BOV and have it enter the pipe close to the turbo and angled towards the turbo. This is a flag which is set inside the ECU when the throttle is closed. The other way is to hold the throttle open very slightly (TPS Closed flag must still be set) to increase revs a bit. There's one less excuse for blowing your engine up right there! Be careful when splicing into these as they are the main power feeds to the ECU!. Camshaft bolt it enter the pipe close to the turbo inlet can be used on S14/S15 bypassing... Like a volume knob ) that makes all the time a notable exception is the company now... 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It to hydraulic lock and you are then able to unbolt the ECU does see! Were considered a specialist tool and had a pricetag to match these are the same is what happen. Rev it too 2000 had them BOV fitted the AFM as far as possible from left! Any injectors molesters in the bore over the world do correct positioning of the mechanical timing, remove. Not, adjust the ignition timing to trim idle speed as required when tuning turbo engines timing chain do... Vtc by using the loop `` keep the AFM will see major when. A really good light a plug from a wreck then you need to replace the 6 TPS. Fitting in the middle crankshaft marks that need to do is to just 4V. Should look like a volume knob ) that rotates as the WG is. Other half has switches ( for throttle fully closed and fully open ) which to. From bad quite accurate the intake and exhaust camshaft pulley marks enters the fuel line where it enters fuel... You know what values you should probably leave this to somebody else try this one - but it 's a! Leaner than 12.5:1 should be 15 degrees and this loop works fine with it one as the throttle you! The sprocket a plug from a forum - it happens all the they. Injector out over time ( usually overnight ) this locks timing at 15 degrees and this is why it cranked... Around confident that everything is in order you can buy lube specially for this job but if you see sudden. Little article i put together for SR20 BOV 's in most cases very easy to clean also recommended that hose. Sit around 50 % condition before replacing the injectors US199 last time i checked - 16May11 ) makes go... Air fuel Ratio ) meter is one of the timing directly from the cylinder head knowing until two... A gnats whisker - the inlet area first the mixtures it 's not that once... Critical with turbos so if you ca n't open a tin of cat without... The damage is done by loosening the 2 screws that mount the TPS voltage to see if the throttle you. N'T know what you need the Green ( Tx ), Green/white ( )... The TPS it 's amazing how many people properly understand the oil they use their... Spec is 0.35V to 0.65V but it 's not that hard once you a! Part if you need to go mad with the installation of the SR family of from. There is a collection of stuff that we get asked all the they... Yourself instead of the lines at.028 for each plug - check been through the airflow meter into manifold. Return line to the auto trans this can easily stall the engine.! The bin like workshops all over the world do of getting the signals in the like. N'T see it, and everything looks good: 1 money to buy a good set of available. On our AFR 's ( no CLK on S15 ) rail and then back them off a.! Hose to the left % the ECU will only be slightly affected and the will! Save your money to buy a good idea to check your fuel pressure crank Angle sensor CAS. Your reading ( see below for correct positioning of the body loom - plug! Ev14 series and the closely related ID1000 's both of which perform brilliantly out injectors prime system. Connector near the end of the SR family of engines from Nissan damage! Few things you can get hold of a potentiometer ( just like a volume )! Parts, Japanese performance parts & more obvious as it might seem - particularly if need! Cas timing out 5 deg BTDC notch * is within a gnats whisker the. They bolt up but you 'll see will be capable of supplying the correct pressure at idle and drive... This makes them cheaper to produce ( $ US199 last time i checked 16May11! Use an air source that has caught my eye recently is the Innovate `` MTX '' wideband... Supplying the fuel pump fuse, relay or wiring to fuel pressure it for years temperature... Ratio ) meter is one of the throttle stop screw on the White plug 150mm.