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General Information => Troubleshooting => Topic started by: Katmandu on April 27, 2006, 03:49:56 pm

Title: How to isolate a bad/leaky injector ??
Post by: Katmandu on April 27, 2006, 03:49:56 pm

My 81 has a "miss" in the engine most noticeable right above idle. It also has greyish smoke coming out the exhaust.

 I think it's caused by a leaky/bad injector.  ??

 How does one isolate a leaky/bad injector ??

Title: How to isolate a bad/leaky injector ??
Post by: hillfolk'r on April 27, 2006, 04:07:13 pm

fire it up,,and make it miss,,,thengrab a 17mm wrench,and start loossening (sorry,spelling,im tired)the injector lines,,while the engine is running,,,,if that injector is working good,then you will hear the revs drop,this is a good injector,,,after checking each one,tighten the line back up,,,,if you break one loose(line),and the revs dont drop,thats the baddie!!!EASY!! and good to know,,its the same as pulling spark plug wires off a gasser,to check cyls,,,good luck,,next time ill tell ya how to "spill  time" your engine's injector pump,if needed!!!actually i gotta check some dudes mercedes timing,igotta spill time that :D

Title: How to isolate a bad/leaky injector ??
Post by: fspGTD on April 27, 2006, 11:00:43 pm

moved to troubleshooting.

Title: How to isolate a bad/leaky injector ??
Post by: 745 turbogreasel on April 27, 2006, 11:36:22 pm

It may help to raise engine speed a bit above idle (steady throttle) so the idle speed circuit doesn't try to fool ya.