Adnic69 0 Posted July 21, 2007 Just finished my MI16 conversion. Ran well when first started. Took it around the block and was ok till nearly home then it developed a continuous misfire( running on 3). Checked the dizzy cap which was shagged so got a new cap and rotor, fitted and still misfiring. Today I changed the leads, coil and injectors for known good ones, still bloody misfiring! Plugs are new too. It is on std induction,ecu. What else would cause it to do this? Share this post Link to post Share on other sites
Toddy 7 Posted July 21, 2007 Ignition amp normally gives intermittent fault, try the Injector plug leads inside that a prong hasnt been pushed down the connector. Share this post Link to post Share on other sites
DamirGTI 323 Posted July 21, 2007 Hi ! Yes , another vote for the ignition amp. try with some spare one and check/reapply the thermal paste on the back of the amp. surface .. cheers Damir Share this post Link to post Share on other sites
28CRAIG 2 Posted July 21, 2007 I have a spare amp if you want to try it when it stops raining. Share this post Link to post Share on other sites
j_turnell 134 3 Cars Posted July 21, 2007 I'd also say ignition amp, but worth while checking your crank sensor too. Share this post Link to post Share on other sites
Adnic69 0 Posted July 21, 2007 Hi I have not got any thermal paste so put copper grease on it but no joy. 28craig, would be good if you could possibly pop around and have a look?? The sensor in the gearbox was cleaned as was the flywheel so not sure it would be that unless its a common problem. How can you check its ok? Thanks Share this post Link to post Share on other sites
28CRAIG 2 Posted July 22, 2007 Hi I have not got any thermal paste so put copper grease on it but no joy. 28craig, would be good if you could possibly pop around and have a look?? The sensor in the gearbox was cleaned as was the flywheel so not sure it would be that unless its a common problem. How can you check its ok? Thanks Yea I can pop round today if you are about pm me your address. Share this post Link to post Share on other sites
Adnic69 0 Posted July 22, 2007 Have just tried another ignition amplifier thanks to 28Craig with no joy. Have just done a comp test and am showing 15.5 on 1 and 14.25 bar on 2,3,4 so that rules out any bad things. That leaves only the crank sensor or as Kieran said, a wiring problem. The annoying thing is that it was running ok, really well when it had its new cap and rotor on till I went to drive it. Share this post Link to post Share on other sites
taylorspug 7 Posted July 22, 2007 (edited) What cylinder is not firing? Pull the injector plugs off to find out! Edited July 22, 2007 by taylorspug Share this post Link to post Share on other sites
jackherer 543 Posted July 22, 2007 What cylinder is not firing? Pull the injector plugs off to find out! Its not an individual cylinder apparently, removing each lead makes it worse. I suggested checking ecu temp sensor and afm connections on the phone earlier. Share this post Link to post Share on other sites
Richie-Van-GTi 70 2 Cars Posted July 22, 2007 could be pump or regulator failure if the ecu temp sender is ok. Share this post Link to post Share on other sites
Adnic69 0 Posted July 22, 2007 I can change the regulator for the old one that I know is working. I checked a load of things earlier but didnt find anything to help solve the problem. Would the pump cause a missfire tho?? Cheers for the help guys Share this post Link to post Share on other sites
Adnic69 0 Posted July 23, 2007 10 points for those of you that thought or said a bad connection on one of the injector pins, it was as suggested pushed down the plug. It now runs ok bar the blowing exhaust. Thanks for now Adam Share this post Link to post Share on other sites
jackherer 543 Posted July 24, 2007 nice one those injector plugs are becoming a more common problem as the looms get older, I remember the first time I had that fault, I found and fixed it at a south meet, got in the car to take someone for a passenger ride and the clutch cable snapped... Share this post Link to post Share on other sites
Guest SeanGTI Posted July 25, 2007 try the ignition amp mate. worked for me when i had a 405 Mi16 Share this post Link to post Share on other sites
