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| Flapp | Hard start when hot | ||
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Guru Newb
 
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Hi
I have a problem when starting my vette hot. I hesitates a bit and then starts with a hard spiking sound and a black puff of smoke. When starting cold it fires right up. It feels like it runs fine both hot and cold. The engine is newly rebuilt with roller lifters, headers, metallic cats and a stroker kit. No fault codes present. I have replaced the water temp sensor, air temp sensor and lamda sonds with no change. The car in question is a -92 Lt1 Any sugestions? |
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Posted on: 2016/9/20 17:54
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| donhall | Re: Hard start when hot | ||
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Senior Guru
 
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Welcome to a new C4 Guru from Sweden.
I'm sure you are disappointed that you haven't received replies to your first post. I googled "corvette hard start when hot", and 208000 suggested solutions were displayed. That might be a first review, especially the first 50 possible suggested solutions. |
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Posted on: 2016/9/21 14:32
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| Matatk | Re: Hard start when hot | ||
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Webmaster
 
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Welcome to the forum.
Very likely a fuel related issue. Could be leaking injectors or a bad fuel pressure diaphragm. Do you have the tools to do a fuel pressure test? If not, a quick test for the fuel pressure regulator is to disconnect the vacuum line and smell for gasoline. |
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Posted on: 2016/9/22 0:27
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_________________
2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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