LS3 vacuum leak??
Thread Starter
Teching In
Joined: May 2012
Posts: 10
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From: Littleton, CO
LS3 vacuum leak?? Long time lurker; first post - hello!
I recently installed a new LS3 crate engine into a kit car I'm building. The engine is completely stock except I had to reverse the intake manifold to fit under the hood.
When the start button was pushed, the engine immediately turned over and fired up. This was accompanied by a loud pop coming out of the right side exhaust. The engine then ran smoothly for 4-5 seconds before sputtering out. I do not have access to my code reader, but think there is a vacuum leak.
Is this a common problem? Must I replace the intake manifold gaskets? Any suggestions?
Thanks in advance!
Mike
I recently installed a new LS3 crate engine into a kit car I'm building. The engine is completely stock except I had to reverse the intake manifold to fit under the hood.
When the start button was pushed, the engine immediately turned over and fired up. This was accompanied by a loud pop coming out of the right side exhaust. The engine then ran smoothly for 4-5 seconds before sputtering out. I do not have access to my code reader, but think there is a vacuum leak.
Is this a common problem? Must I replace the intake manifold gaskets? Any suggestions?
Thanks in advance!
Mike
