mjb.thomassen
Member
It might be a bad injector.it smells from the exhaust and have some white smoke sometimes.
I'd pull the plugs then and just check before you put your hand in your pocket
I haven't forgot. went to try do it today but cant get in the throttle pot connector as it points down.
So have done some checking to probe at the other ends (at the ECU plugs) will try again tomorrow. How did you probe it?
But while I was digging for connector/pin location I came across this page.
When you have the 1800rpm issue will it rev more?
J
mjb.thomassen
Member
I took it off
mjb.thomassen
Member
After some discussions I also think it is an injektion problem too rich mixture
mjb.thomassen
Member
I also think it s an injektor issue because of the smell and smoke.The mixture is far too rich
Get yourself an injector cleaner trigger tool. Then take the plenum off & injectors out. That way you can check for both bad injector and the seal around the plenum.
Unmetered air leak on the plenum will cause the the O2 sensors to see a lean mix, so the ECU will add fuel !! Same thing happens if the plastic inlet air resonator has holes in it from the exhaust heat !!
Diagnostic data values will help give a clue. What does Nanocom say ??
Unmetered air leak on the plenum will cause the the O2 sensors to see a lean mix, so the ECU will add fuel !! Same thing happens if the plastic inlet air resonator has holes in it from the exhaust heat !!
Diagnostic data values will help give a clue. What does Nanocom say ??
mjb.thomassen
Member
Have no diagnostictool nearby here in rotterdam ,with cleaning or changing an injektor I hope it Will be solved besides looking for air leaks
Get something like this (available on ebay, Amazon, etc.) Ideally one with a push button so you can pulse the injectors, rather than a steady 12V.
https://www.ebay.co.uk/itm/314199100192?chn=ps&_ul=GB&_trkparms=ispr=1&amdata=enc:19Pn3k0JFTrWVf9R8KkPPVg26&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&mkscid=101&itemid=314199100192&targetid=2360873003490&device=c&mktype=pla&googleloc=9046077&poi=&campaignid=21690875706&mkgroupid=169793746720&rlsatarget=pla-2360873003490&abcId=10027099&merchantid=659373243&gad_source=1&gclid=Cj0KCQiA0--6BhCBARIsADYqyL_VV9fntjXW6Cwff6eYsxLNrz0BJ2CSQXRgZaYm9U7PsQC7-VD6EPgaAqSNEALw_wcB
But as I said you need to remove the plenum & ram pipes to get the fuel rail off, so replace the RTV sealant is ok at the same time !!
https://www.ebay.co.uk/itm/314199100192?chn=ps&_ul=GB&_trkparms=ispr=1&amdata=enc:19Pn3k0JFTrWVf9R8KkPPVg26&norover=1&mkevt=1&mkrid=710-134428-41853-0&mkcid=2&mkscid=101&itemid=314199100192&targetid=2360873003490&device=c&mktype=pla&googleloc=9046077&poi=&campaignid=21690875706&mkgroupid=169793746720&rlsatarget=pla-2360873003490&abcId=10027099&merchantid=659373243&gad_source=1&gclid=Cj0KCQiA0--6BhCBARIsADYqyL_VV9fntjXW6Cwff6eYsxLNrz0BJ2CSQXRgZaYm9U7PsQC7-VD6EPgaAqSNEALw_wcB
But as I said you need to remove the plenum & ram pipes to get the fuel rail off, so replace the RTV sealant is ok at the same time !!
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Ok, I had a brain fart in bed last night, my dad would have the kit to do it the easy way. Guess what I got from my last garage raid 
So plugged in the right box and got these measurements I had to use the 20k range as it went out of Range on the 2k setting.
Same sort of figures on the other side but in reverse as expected.
J
So plugged in the right box and got these measurements I had to use the 20k range as it went out of Range on the 2k setting.
Same sort of figures on the other side but in reverse as expected.
J
I have no idea, what is that you found?Ok, I had a brain fart in bed last night, my dad would have the kit to do it the easy way. Guess what I got from my last garage raid
View attachment 331717
So plugged in the right box and got these measurements I had to use the 20k range as it went out of Range on the 2k setting.
View attachment 331718View attachment 331719
Same sort of figures on the other side but in reverse as expected.
J
A nice case of break out boxes with different plugs
Dad used them when he had the garage, put it inline to the sensor then you can run the car and check signals
J
Attachments
You mean you plug the injector wire into it, that it into the injector?
Yes there is a 2 pin box but this was for the TPS. If it was in a running car then voltage could be measured RAVE gives volt but not resistance
J
That says 570ohms to me, which should also work on 2k range, so the meter contacts probably need a clean judging by the dirt on the meter.Ok, I had a brain fart in bed last night, my dad would have the kit to do it the easy way. Guess what I got from my last garage raid
So plugged in the right box and got these measurements I had to use the 20k range as it went out of Range on the 2k setting.
View attachment 331718
Same sort of figures on the other side but in reverse as expected.
J
Hopefully you measured the resistance of the injectors with the ECU wire disconnected ? 570ohms is far too high. They should be around 16ohms.
From RAVE:
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TPS
Maybe I should get the proper break out box probes and clean them, the meter is dusty does that do any measuring?
Used it the other day on some mains wiring it works fine, do I need to get my coveted Bosch meter out and do it again?
Yes it did in low range but then went out of range for the fully open throttle which you have failed to mention if it would be in the 2k range?
Maybe the OP has an Auto range?
The engine is on the garage floor.
If you look its plugged into the throttle position sensor.
J
So as you have edited your post.
Would you like me to go measure my injectors with the same meter?
Even measuring them wouldn't prove a leaky injector.
J
mjb.thomassen
Member
I took off all injektors today and bought an injektor cleaner tool next week I ll start cleaning and do the Electric measuring.
I also read the resistance of the injektors is 16 ohm.I hope you can check that on your injektors , thans in advance
I also read the resistance of the injektors is 16 ohm.I hope you can check that on your injektors , thans in advance
@marjon The first post above with the meter confused me. It sounded like injector ohms, when he was measuring the TPS.
@mjb.thomassen Yes injectors should definitely be about 16ohms. Cleaning them always helps, especially if the spray pattern is irregular. It should be a nice cone shape. If any are leaking it should show with cleaner can pressure & zero voltage, but make sure you get a good seal around the fuel inlet on the injector.
For the TPS you need to look for a smooth change in resistance across the normal range of rotation, i.e. throttle body closed to wide open.
Can't remember if you posted it above, but what's the idle fuel rail pressure ? Any tyre gauge on the fuel rail scrader valve will do the job. Also check the vacuum pipe on the fuel rail regulator.
@mjb.thomassen Yes injectors should definitely be about 16ohms. Cleaning them always helps, especially if the spray pattern is irregular. It should be a nice cone shape. If any are leaking it should show with cleaner can pressure & zero voltage, but make sure you get a good seal around the fuel inlet on the injector.
For the TPS you need to look for a smooth change in resistance across the normal range of rotation, i.e. throttle body closed to wide open.
Can't remember if you posted it above, but what's the idle fuel rail pressure ? Any tyre gauge on the fuel rail scrader valve will do the job. Also check the vacuum pipe on the fuel rail regulator.
