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Old 10-29-2000, 01:27 PM
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My car has a hard time starting any time of the day, even in 90 degree weather, not only on cold mornings(because I know diesel engines have a hard time starting in cold weather). Is this some sort of vacum problem ? Also when I turn off the ignition, the engine shudders and moves side to side like it's not held in place really well.
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Old 10-29-2000, 03:50 PM
Wm. Lewallen
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Bad motor mounts can cause the engine to "shudder" when you turn it off. As for hard starting hot or cold, that can be a number of things. You can start by checking the valve clearance(cold engine);Check the dampening screw on the rear of the injection pump.Make sure it is not screwed all the way in;Check fuel pump to make sure it is delivering enough fuel at cranking speed. Last but by no means the last reason your engine is hard to start, is do a compression test on each cylinder.For non turbo engines the normal pressure is 22-24 atmospheres(hot engine)Minimum pres.about 15atmos.
Max. difference between any two cylinders is 15atmo.For turbo engines the normal comp.pressure is 24-30atmo. I believe one atmos.equals about 14.7psi.
Good luck with your starting problem
Bill Lewallen Lexington,Ky.
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Old 10-29-2000, 03:57 PM
Wm. Lewallen
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Correction! Permissible difference of pressure between individual cylinders is 3atmos,not 15. Bill L.
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Old 10-30-2000, 09:42 AM
Join Date: Jun 1999
Location: Quezon City, Philippines
Posts: 79
First, make sure that your in-tank filter, pre-filter, and fuel filters are okay.

If filters are goos, go to a Bosch diesel fuel injection service shop, and ask them to try increasing the "no air" fuel delivery. This adjustment can be done in 5 to 10 minutes without removing the injection pump.

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