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Jeep Wrangler YJ
YJ General Discussion
91 Jeep YJ - Cranks but No start - Have spark and have fuel at fuel rail
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<blockquote data-quote="TimberTim" data-source="post: 434751" data-attributes="member: 20208"><p>Might crawl underneath with a bright light and small mirror to do a visual inspection. Let me say I suggested this to a member on a different forum and he found cracks in his exhaust manifold. This problem is more common than might be expected. The exhaust manifold can be removed in 90 minutes +/-. While it is on the bench straight edge the mating surfaces of the exhaust and intake manifolds. Also , use a new gasket for reinstalling . A new exhaust manifold cost under $100 when I did mine. As a comparison, with a new exhaust manifold and muffler my yj is so quiet I can sneak up on people! </p><p></p><p>An after thought would be to take it to a smog shop. They can tell by your read out if you have exhaust leaks . That's how I found mine. The tech said to look for leaks after the combustion chamber. A smog test is $45 and a cheap diagnostic test ! I saved my paperwork, so if your tech won't play ball let me know and we can compare test results</p></blockquote><p></p>
[QUOTE="TimberTim, post: 434751, member: 20208"] Might crawl underneath with a bright light and small mirror to do a visual inspection. Let me say I suggested this to a member on a different forum and he found cracks in his exhaust manifold. This problem is more common than might be expected. The exhaust manifold can be removed in 90 minutes +/-. While it is on the bench straight edge the mating surfaces of the exhaust and intake manifolds. Also , use a new gasket for reinstalling . A new exhaust manifold cost under $100 when I did mine. As a comparison, with a new exhaust manifold and muffler my yj is so quiet I can sneak up on people! An after thought would be to take it to a smog shop. They can tell by your read out if you have exhaust leaks . That's how I found mine. The tech said to look for leaks after the combustion chamber. A smog test is $45 and a cheap diagnostic test ! I saved my paperwork, so if your tech won't play ball let me know and we can compare test results [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
91 Jeep YJ - Cranks but No start - Have spark and have fuel at fuel rail
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