12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

Engine Misfiring and Rapping Loudy...

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Old Nov 15, 2008 | 01:53 PM
  #1  
Katmandu's Avatar
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From: Wetumpka, Alabama
Exclamation Engine Misfiring and Rapping Loudy...

What would cause the engine to misfire, rap loudy (valve train rhythm) and smoke out the valve covers.

Here's a short video clip.

http://www.youtube.com/watch?v=GaPALmKCJoY



Here's my thread in the 911 forum.....

https://www.dieseltruckresource.com/...63#post2280263


.
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Old Nov 15, 2008 | 02:15 PM
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From: Western Pa
Pull your valve covers
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Old Nov 15, 2008 | 02:34 PM
  #3  
Katmandu's Avatar
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From: Wetumpka, Alabama
Question

Originally Posted by logskidder
Pull your valve covers
Roger that.

Can I run it with the valve covers off to watch the valve action for problems ?
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Old Nov 15, 2008 | 03:24 PM
  #4  
1-5-3-6-2-4's Avatar
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From: Okotoks AB
yes you can, it may throw a little oil. no biggy.
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Old Nov 15, 2008 | 11:21 PM
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Tough to call, but you may have a sticking plunger in the injection pump.
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