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Old 17 Mar 2008, 12:46 pm
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Default del sol running on 3 cylinders?

I just bought a del sol to run around in while I swap my eg. It's got a d15b7.Anyways, it runs weak as hell so I started to check it out and found out it's only running on 3 cylinders.The one on the far right (cylinder #1) isn't being used at all. I took out the spark plug wire and it had no effect on the motor.When I would disconnect any of the others, the car would almost die.But I checked the spark at the end of that wire and it's sparking just as strong as the rest of them.I just installed new NGK plugs and they are all gaped correctly.I swapped two of the injectors around and the problem remains in the same cylinder so it's not the injector.I made sure power is getting to that injector as well.What's the next simplest thing to check?ThnxInAdvnce for the help.
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Old 17 Mar 2008, 01:01 pm
Tad Tad is offline
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Do a cylinder compression test, if your getting both spark and fuel this would be the next obvious test to do. You may also want to do a cylinder leakdown test as well. Follow the links below for more info. Both are very similar except the leakdown test shows your compression lost and oppsoed to measuring compression. These test will tell you if all your valves and piston rings are sealing correctly. It is very common to have a valve that wont close due to deposits on the valve face. Bent valve stems are also a problem that would cause a valve not to seal. If your valves are fine I would look to your pistons rings, although these do not fail as often and valves.































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Old 17 Mar 2008, 08:22 pm
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Default Re: del sol running on 3 cylinders?

Quote:
Originally Posted by Tad View Post
Do a cylinder compression test, if your getting both spark and fuel this would be the next obvious test to do. You may also want to do a cylinder leakdown test as well. Follow the links below for more info. Both are very similar except the leakdown test shows your compression lost and oppsoed to measuring compression. These test will tell you if all your valves and piston rings are sealing correctly. It is very common to have a valve that wont close due to deposits on the valve face. Bent valve stems are also a problem that would cause a valve not to seal. If your valves are fine I would look to your pistons rings, although these do not fail as often and valves.































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