Cam and crank alignment, TDC problems
07-21-2011, 10:39 AM
#11
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We had the exactly same issue as the topic starter and the car started but had no idle at all.
So we did as you suggested him - we moved 1 teeth from timing chain.
And we ended up with what you see now.
07-22-2011, 05:24 AM
#14
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Right off the bat, your crankshft to cam drive wheel marks are off...that shouldnt matter, but makes timing difficult sometimes. Only way to fix that is to remove the cams and TCT, remove the front bolt, and move the cam wheel one tooth counter clockwise.
To me, it looks like your exhaust cam needs to go one tooth clockwise. you gotta pull the cams anyway to fix it, you might as well reset the rest of the marks on the cam wheel.
To me, it looks like your exhaust cam needs to go one tooth clockwise. you gotta pull the cams anyway to fix it, you might as well reset the rest of the marks on the cam wheel.
07-28-2011, 09:58 AM
#15
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ok, so my mechanic just finished all the adjustments
and all marks lined up perfectly!
Crank to timing chain gear and both IN and EX cam gears are horizontal when at TDC.
Seems like we made mistakes during first assemble.
Now my OBD scan tool shows normal timing - 5 degrees at idle.
BUT!
'Knock Retard' parameter is 7 degrees (should be 0 at idle).
MAP is 56kpa! Instead of 24-30Kpa.
Idle is VERY VERY rough!
The engine dies if throttle is blipped slightly above idle rpm.
It's difficult to start the engine also - need to touch gas pedal to start it up!
ECU is stock.
Reseted, relearned and no DTC's found.
Everything is STOCK except for Hondata IMG (but i've read that no one's having issues with idle after Hondata IMG install...)
IAC all cleaned up, also tried IAC from friend's s2k - same troubles with idle...
Any ideas, gentlemen?
Will HIGHLY appreciate your quick responses and suggestions!
and all marks lined up perfectly!
Crank to timing chain gear and both IN and EX cam gears are horizontal when at TDC.
Seems like we made mistakes during first assemble.
Now my OBD scan tool shows normal timing - 5 degrees at idle.
BUT!
'Knock Retard' parameter is 7 degrees (should be 0 at idle).
MAP is 56kpa! Instead of 24-30Kpa.
Idle is VERY VERY rough!
The engine dies if throttle is blipped slightly above idle rpm.
It's difficult to start the engine also - need to touch gas pedal to start it up!
ECU is stock.
Reseted, relearned and no DTC's found.
Everything is STOCK except for Hondata IMG (but i've read that no one's having issues with idle after Hondata IMG install...)
IAC all cleaned up, also tried IAC from friend's s2k - same troubles with idle...
Any ideas, gentlemen?
Will HIGHLY appreciate your quick responses and suggestions!
07-28-2011, 11:02 AM
#17
Get a leak down and compression test. The F2x engines are interference engines and there might be a bent valve or two from the time the motor ran miss aligned. You need to rule that out first before you chase the new miss fire issue. I am surprised it started at all if the cams were not installed right. Yours is the first report I have seen posted on a motor running with the cams misaligned.
07-28-2011, 11:09 AM
#18
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these cars will run w/the cams off.. my exhaust cam was off 1 tooth when i got the car, then one time i was in a hurry on the dyno and my intake cam was off a tooth.. car fired right up and ran decent enough
I actually didnt realize that the exhaust cam was off a tooth when I first got the car till I put it on the dyno and was missing like 30 ft/lbs
I actually didnt realize that the exhaust cam was off a tooth when I first got the car till I put it on the dyno and was missing like 30 ft/lbs
07-28-2011, 11:51 AM
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Get a leak down and compression test. The F2x engines are interference engines and there might be a bent valve or two from the time the motor ran miss aligned. You need to rule that out first before you chase the new miss fire issue. I am surprised it started at all if the cams were not installed right. Yours is the first report I have seen posted on a motor running with the cams misaligned.
The engine's healthy i suppose...
Any further suggestions?
P.S. Going to test IAC again...
But those 7 degrees of knock at idle really bother me...
07-28-2011, 12:10 PM
#20
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Originally Posted by Stratocaster' timestamp='1311879776' post='20825136
Get a leak down and compression test. The F2x engines are interference engines and there might be a bent valve or two from the time the motor ran miss aligned. You need to rule that out first before you chase the new miss fire issue. I am surprised it started at all if the cams were not installed right. Yours is the first report I have seen posted on a motor running with the cams misaligned.
The engine's healthy i suppose...
Any further suggestions?
P.S. Going to test IAC again...
But those 7 degrees of knock at idle really bother me...
but failed the second test when blocking 2 holes in throttle body - the engine dies...
Bad IAC or Hondata IMG has to do something with that??
Dilemma...
