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Old 09-02-2005   #5
SpicyOrange
 

Join Date: Apr 2004
Posts: 76
Re: Vibrations after clutch install possible?

Ok I still have this problem, I parked it for the summer and now I'm gonna try to get this thing running before winter. I have a bad vibration at idle, and right above 4000 rpms. I already replaced the timing belt and balance shaft belt since I thought for sure thats what it was, I had 2 people that are mechanics and that have done Timing belts in DSMs before so I'm %90 sure the shafts were lined up correctly, and I know they can line up and still be off, but I pulled the plug on the back of the motor and checked it myself.

So now I did a couple tests on the engine, First I did a leakdown test and starting from left to right it went as follows, %3-%5-%33-%25, obilvously there is something wrong with 3 & 4 (the two farthest to the right) And then I did a compression test, I got 175-170-150-160, still I think there is something wrong, I'm hoping head gasket, but I couldn't tell where the air was going in the leakdown test.

When I pulled the plugs to start these tests I noticed the plugs I installed looked like they were brand new (pure white ceramic with a hint of detonation), and they probally had about 100 miles on them since I changed them when I did the timing belt. So I got to thinking/hoping there was a lean condition, So today I did a fuel pressure test and I have about 44psi with the vacuum on at idle, and 62psi under WOT @14psi, so everything there seemed fine, no drop off in pressure.

Does anyone have any ideas what might be the problem?
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