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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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760 GLE V6 missfireViews : 519 Replies : 2Users Viewing This Thread : |
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Sep 7th, 2007, 22:30 | #1 |
New Member
Last Online: Sep 8th, 2007 21:01
Join Date: Jul 2007
Location: trowbridge
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760 GLE V6 missfire
Hi all need some help on my old 760GLE auto V6!
On start up engine is fine, in under a minute theres a lumpy-ness like a missfire that begins. car drives fine and no water /oil loss, or real difference in fuel economy but failed the MOT on emissions! I've changed so farlugs, leads, cap, rotor arm, even tried from my spares collection a different Air Mass meter and ECU with no joy.. I've had a compression test done which is also fine???? unplugged most sensors and injectors which dont seem to change it? Pretty sure its electrical and must be heat related.??? Any idea's? It's a good old bus and really to good to scrap! Cheers Mark 760 GLE Auto V6 - 1990 |
Sep 8th, 2007, 01:05 | #2 |
Mr G
Last Online: Jun 12th, 2020 19:11
Join Date: May 2007
Location: north yorkshire
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a misfire and you thinking of scraping it? lol.
sounds sounds like you have covered msot things, id be looking at the injectors now,, have you tryed a new air filter? and a good bloody blasting!
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Sep 8th, 2007, 10:13 | #3 |
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Last Online: Sep 8th, 2007 21:01
Join Date: Jul 2007
Location: trowbridge
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Thanks Jim,
Yeah she's too good to scrap!!! Have unplugged each injector in turn, but the miss seems to travel around the engine like the compression test which was spot on, and didnt change on any injector being unplugged??? To me thats what confirms heat and electrical as the issue??? Air filter is good and it starts up fine - but I'll disconnect it and give a try. Cheers Mark |
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