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Tim Mohr
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Volkswagen Beetle: 98 vw beetle 2.0 .... heavy misfire on #2

Customer Question

98 vw beetle 2.0 .... heavy misfire on #2 cylinder. replaced coil pack, plugs, wires and #2 fuel injector. no help. #2 cylinder compression is 190... any thoughts?
Submitted: 1 year ago.
Category: VW
Expert:  Tim Mohr replied 1 year ago.
Hi, my name is ***** ***** you checked with a noid light on the #2 coil and seen if the light flashes? and also on the injector to see if the light flashes?
Customer: replied 1 year ago.
i checked the injector with the noid and it flashes. but not the coil...i go do that now
Customer: replied 1 year ago.
the coil is putting out spark on #2
Expert:  Tim Mohr replied 1 year ago.
so the noid light id flsshing on the number 2 coil, and on the 2 injecor?
Customer: replied 1 year ago.
its flashing at the injector. i only checked for spark at #2 on coil.
Customer: replied 1 year ago.
also, i pulled the valve cover to check for a broken spring, but how do i tell if one is broken? the caps are covering them. I also checked timing at tdc by the cam marks and the flywheel marks.... they are way off.
Customer: replied 1 year ago.
i smoked #2 cylinder with it at tdc.... no smoke coming from #2 valve positions...
Customer: replied 1 year ago.
shit, i need to check for smoke from the exhaust too...
Expert:  Tim Mohr replied 1 year ago.
Customer: replied 1 year ago.
once i set it at tdc on #1 the cam is on the mark, but the flywheel mark is way off
Expert:  Tim Mohr replied 1 year ago.
then the timing belt has slipped, have you checked compression on all 4 cylinders?
Customer: replied 1 year ago.
yep. all 4 cylinders are reading between 190-210
Expert:  Tim Mohr replied 1 year ago.
you still need to align the timing belt, it has obviously slipped, if the marks do not line up, how many miles on this?
Customer: replied 1 year ago.
theres only 72k on it but very very poorly maintained by owner. He has the timing belt kit on order
Customer: replied 1 year ago.
what about carbon build up on the valves?
Expert:  Tim Mohr replied 1 year ago.
carbon build up wouldd show on the compression test, the problem is going to lie in the timing belt, the marks have to line up perfectly, so this need to be adressed before anything else,Tim
Customer: replied 1 year ago.
sounds good, but wouldnt a leakdown test comfirm carbon build up? or is that pretty much what the smoke test did?
Expert:  Tim Mohr replied 1 year ago.
the smoke test would show the same thing, if the valves were leaking, get the timing in order and it should fix it,Tim

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