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shake, rattle and roll
#1

The car has been sitting for about a week, and the moment I started it this afternoon it felt as the entire engine was going to break into little peieces.. shaking, rattling, stumbling.. and rather violently ! This went on for a good half minute ( not sure why I even let it run that long in that condition.. but I did ) Scared the crap out of me, I lifted the hood to look around, paranoid as I am now about the belts
I peeked at the timing belt "vista" spot to make sure it's still there, or that the balance belt is not by chance sitting on top of it [img]style_emoticons/<#EMO_DIR#>/dry.gif[/img] ,
there was no smell of any kind, gas, burning wires smell, no weird smoke coming out of the exhaust while the engine was running either,
I also pushed in the DME relay in a bit to make sure that's sitting firmly in its spot ( hey, that damn thing is responsible for 99.5% of the starting and stalling problems in our cars [img]style_emoticons/<#EMO_DIR#>/rolleyes.gif[/img] ), and then got the courage to start it again to see what happens. Started perfectly, idled smoothly, I revv'd slowly and then quickly to about 5k rpm, and also took it for a quick spin around the neighborhood. Ran great, no problems. Turned it off, started it again a few minutes later and again, no problems.

So I called Dr. Flash who advised me to check the plug wires and the then the plugs torque in case either/or might have gotten loose. Well, did not need to get to the plugs themselves because as I was pushing the wires in, starting with the caps on the plugs first and then moving to the distributor ends I felt one move in a bit and heard a click when it could go no further - it was number 4, the lowest one ( at the distributor connection end ) - so if I had to bet, that must have been the culprit. Not sure why it did not repeat the problem on the second start but maybe the warmth of the connection had something to do with it [img]style_emoticons/<#EMO_DIR#>/huh.gif[/img]

I'll let the car sit for another couple of days and see if the start problem repeats itself, but I'm guessing / hoping it wont.
Damn gremlins !

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#2

Hope that was it (nice and easy), if it keeps happening another possibility may be a stuck/dirty injector; might not be a bad idea to run through a tank of gas with Techron in it
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#3

Well, I do use (only) Chevron gas in the 968 and on top of that I pour a bottle of Techron in about every ten fill ups or so.. hopefully that keeps the injectors clean, but some impurities can still get stuck in there on occasion I suppose.
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#4

I have seen this happen due to oil in the plug housing shorting out the connection. Pull the plugs and see if there is oil in the plug wells. You may just need to replace the rubber gaskets in the cam cover.
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#5

he just had that done as a part of the new valve job, so not likely
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#6

When I replaced my clutch, I also sent the injectors out to Witchhunter to be refurbished. When I finished and started the car, I thought the rod bearings had fallen into the oil pan. Shut it down, rechecked the oil, checked the injector connections, restarted it, and the noise was less, then went away. Figure there was a lot of air in the system. Should have let it bleed before restarting.
Ken
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#7

started it this morning after a pretty cold night ( well, in relative California "cold" definition that is [img]style_emoticons/<#EMO_DIR#>/rolleyes.gif[/img] ) and it was smooth as silk.
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