MarkGolf 6 Posted January 30, 2012 Report Share Posted January 30, 2012 hi all,I've just removed my cylinder head to bolt a new one on and everything appears very sooty, plugs, pistons etcNow, when the car was working, when rev'd from a standstill, thick black smoke and black deposits would shoot out the exhaust, I also got blue smoke on over run. I figured my valve seals probably needed doing so that's what I'm doing now. Anyway, when standing behind the car, the smell of fuel is crazy so add that to the soot and I am confident of an over fuelling issue. My car has a walbro pump and a 4bar Fpr. It is originally a 2.9 corrado setup. It has new everything (as of 2k miles ago). MAF, lambda etc...Any reason for my overfilling? Link to post Share on other sites
VIW28 29 Posted January 31, 2012 Report Share Posted January 31, 2012 Have you checked the timing Mark? If it was out a tooth it wouldn't be all that noticeable but would make the car dull and have potential over fuelling issues. Wiring for maf and lambda is ok? Need to get it on vagcom and see if your lambda is turning on and off and where the regulation is. You could swap out the 4 bar fpr for a 3 bar for now to see what difference that makes, easiest thing to try in the meantime. OBD2's ran 3bar fpr's, in case you didn't know. Link to post Share on other sites
MarkGolf 6 Posted January 31, 2012 Author Report Share Posted January 31, 2012 I did check it before removing everything. I believe it to be correct, the crank pulley mark lined up, piston 1 was at TDC and I could slide the cam lock tool in place with no effort. The only thing that is a bit strange is the flywheel timing mark which I can't see whenever the crank is lined up so I must have fitted that wrong! lolThe car always sticks with or slightly pulls on other VR's so I think the timing was cool.When I unplug the MAF, the car starts to hunt and run crap so I know that works. Obvisouly the MAF has been relocated to where the carbon canister is and sits right behind a foam filter.... Not sure If that would make a difference.Would VAG COM work on an OBD1?I'll have to find a chrome 3Bar fpr then lol Link to post Share on other sites
michael5556 247 Posted January 31, 2012 Report Share Posted January 31, 2012 Can I ask why it has such a powerful fuel pump? Is it an inline pump or an intank? If its an inline, the fpr probably can't cope with the amount of fuel that thing is shovin into you engine hence the overfueling. Link to post Share on other sites
VIW28 29 Posted January 31, 2012 Report Share Posted January 31, 2012 ^^^ Not true, sure any turbo setup works in the same fashion unless you use a rising rate jobbie.Sounds like your timing maybe ok Mark. Did the pointer on the intermediate shaft point to 12.00 when you timed it up originally? Vagcom will work on OBD1 but you may need the 2x2 adapter. Can lend you mine if you need one.Never mind your poncey chrome fpr, just fire a 3 bar in and see if it works lol. Your 4 bar fpr could also be faulty. Check gauze filter on it and make sure the o-rings aren't nipped. Link to post Share on other sites
MarkGolf 6 Posted January 31, 2012 Author Report Share Posted January 31, 2012 It has a walbro because the standard one failed and I was future proofing the car I case F/I comes.No idea on the timing Geth but followed a manual and I'm pretty sure it's perfect. The notch on the intermediate sprocket can be seen and everything else I can see appears lined up.The car was originally a 1.4 and has an obd2 socket but the engine and ecu etc is all obd1 lol... Link to post Share on other sites
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