Update on violent shaking issue, its there at idle with clutch in....
08-25-2008, 02:32 PM
#12
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OK, swapped POS modules (flip upside down to each side) and cylinder 1 is still bad. im really dirty
and having my brother type this for me, i know the SJM site says what do to now, is it COIL for sure? alright thanks for the help ill be back in 20 or so i am going to reapply the thermal paste and reinstall the modules.
08-25-2008, 02:41 PM
#13
Not sure what you did. I meant disconnect one pair of POS connectors and then connect them to the
other POS (and vice versa). IIRC, that doesn't have to involve removing the POS from the bracket.
08-25-2008, 03:17 PM
#14
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I had to swap mine, the wires were not long enough to go from the top of drivers side POS, to the bo
bottom of passanger side POS.
But i did swap them from one side to another and nothing changed, so im looking at a coil, spark plug (doubtful)
So no i test coil #1 with a spark tester is that the next step? given my hesitation, now this, im sure this is been the problem the whole time and i doubt a sparkplug would slowly die,.. but i feel really good to have isolated this problem... thanks so much Dave and everyone else
But i did swap them from one side to another and nothing changed, so im looking at a coil, spark plug (doubtful)
So no i test coil #1 with a spark tester is that the next step? given my hesitation, now this, im sure this is been the problem the whole time and i doubt a sparkplug would slowly die,.. but i feel really good to have isolated this problem... thanks so much Dave and everyone else
08-25-2008, 03:24 PM
#15
now thta you found out that #1 is dead find out why? spark? fuel? compression?
could be a cracked plug(i had one), could be a dead injector, could be a dead coil, could be compression in cyl #1
start easy...swap spark plug #1 with any other and see if the dead cyl changes. if not you rule out the spark plug.
swap injector #1 to any other and again see if your miss changes to another cyl (pay attention to the o-rings, take your time)
swap the #1 coil or find a way to test it.
All these after you ruled out the POS of course.
hope this helps
good luck
start easy...swap spark plug #1 with any other and see if the dead cyl changes. if not you rule out the spark plug.
swap injector #1 to any other and again see if your miss changes to another cyl (pay attention to the o-rings, take your time)
swap the #1 coil or find a way to test it.
All these after you ruled out the POS of course.
hope this helps
good luck
08-25-2008, 03:32 PM
#16
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I dont know if this matters, but i had my injectors cleaned a month ago and they were fine, can it s
still be a bad one, ive had an issue before and after the cleaning (hesitation)
as for swapping spark plugs, the set back is i dont want to back out the plugs and have to buy 2 new ones after the seal is ruined. can i go buy cheapo plugs at the store (5 of them) and connect all 5 to the coil connectors and watch for a spark?
Wouldn't this method be the best to start with, as i dont have to pull the injectors (ew) i dont have to get a leak down test, i am just seeing if there is a spark, and if not, there is the problem.
as for swapping spark plugs, the set back is i dont want to back out the plugs and have to buy 2 new ones after the seal is ruined. can i go buy cheapo plugs at the store (5 of them) and connect all 5 to the coil connectors and watch for a spark?
Wouldn't this method be the best to start with, as i dont have to pull the injectors (ew) i dont have to get a leak down test, i am just seeing if there is a spark, and if not, there is the problem.
08-25-2008, 03:50 PM
#17
the seal is ruined by backing up the plugs? i'm sorry i don't understand
take put plug#1 and plug #2.
install plug #1 in cyl #2 and ,plug #2 in cyl #1
or if you feel more confortable, buy 5 F6DTC copper heads Bosch plugs and see if that makes your miss go.
I strongly suggest you take your current plugs out (especially #1)and inspect it for any damage
i had a cracked one that you could barely see but enough to give me a hard time.
ended up buying only one plug and not the wholes set<ul><li><a href="http://www.autohausaz.com/search/product.aspx?sid=q034e2bhnbzzkizujwkblc55&make id=800002@Audi&modelid=1009055@COUPE%20QUATTRO %20&year=1990&cid=25@Ignition%20Parts& gid=7212@Spark%20Plug">http://www.autohausaz.com/s
install plug #1 in cyl #2 and ,plug #2 in cyl #1
or if you feel more confortable, buy 5 F6DTC copper heads Bosch plugs and see if that makes your miss go.
I strongly suggest you take your current plugs out (especially #1)and inspect it for any damage
i had a cracked one that you could barely see but enough to give me a hard time.
ended up buying only one plug and not the wholes set<ul><li><a href="http://www.autohausaz.com/search/product.aspx?sid=q034e2bhnbzzkizujwkblc55&make id=800002@Audi&modelid=1009055@COUPE%20QUATTRO %20&year=1990&cid=25@Ignition%20Parts& gid=7212@Spark%20Plug">http://www.autohausaz.com/s
08-25-2008, 03:58 PM
#20
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OK, well the plugs have a crush washer built in, and when you back them out the washer is done, its
one time use (this is per Dave F.)
believe me i want to pull the plug bad. Id love it to be a plug, but the plugs have a few thousand on them (i know 1 plug isnt that big of a deal to buy) but i probably have some old plugs somewhere, and if i plug 5 old plugs in the coil connectors, and crank the engine and #1 has no spark, i know it would not be a plug issue and is my coil right?
believe me i want to pull the plug bad. Id love it to be a plug, but the plugs have a few thousand on them (i know 1 plug isnt that big of a deal to buy) but i probably have some old plugs somewhere, and if i plug 5 old plugs in the coil connectors, and crank the engine and #1 has no spark, i know it would not be a plug issue and is my coil right?