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Tim Mohr
Tim Mohr, ASE MASTER TECH
Category: VW
Satisfied Customers: 15114
Experience:  30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
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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: 7 months ago.
Category: VW
Expert:  Tim Mohr replied 7 months 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 7 months ago.
i checked the injector with the noid and it flashes. but not the coil...i go do that now
Customer: replied 7 months ago.
the coil is putting out spark on #2
Expert:  Tim Mohr replied 7 months ago.
so the noid light id flsshing on the number 2 coil, and on the 2 injecor?
Customer: replied 7 months ago.
its flashing at the injector. i only checked for spark at #2 on coil.
Customer: replied 7 months 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 7 months ago.
i smoked #2 cylinder with it at tdc.... no smoke coming from #2 valve positions...
Customer: replied 7 months ago.
shit, i need to check for smoke from the exhaust too...
Expert:  Tim Mohr replied 7 months ago.
oK, FIRST OFF, THE TIMING IS WAY OFF ON THE CAMS?
Customer: replied 7 months 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 7 months ago.
then the timing belt has slipped, have you checked compression on all 4 cylinders?
Customer: replied 7 months ago.
yep. all 4 cylinders are reading between 190-210
Expert:  Tim Mohr replied 7 months 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 7 months ago.
theres only 72k on it but very very poorly maintained by owner. He has the timing belt kit on order
Customer: replied 7 months ago.
what about carbon build up on the valves?
Expert:  Tim Mohr replied 7 months 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 7 months 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 7 months 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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