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CATEGORY LISTINGS > CUMMINS > Help!! Hard start when engine is hot? [ REFRESH ]
Thread Title:

Help!! Hard start when engine is hot?


Created On Thursday September 29, 2011 16:47 Diesel Talk
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afiregirl
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Posts: 5
Joined: Jun 2011

Note Thursday September 29, 2011 16:47 View thread in raw text format
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Hi -

My 1998 24V is having issues when hot with starting. When it's cold there isn't a problem - it fires right up after the glow plugs have done its thing. However it takes a half dozen cranks or more when the engine is hot. The engine runs just perfectly - no sputtering, no weirdness . .. just purrs along. Here's what I know so far:

I don't think it's a loss of prime - when the truck has been sitting it fires right up.

I changed the lift pump to a fuel boss (hard starts started 2 weeks after install).

I replaced the VP44 a year ago.

Thoughts?

Thanks all!!






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marc7242
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Posts: 254
Joined: Sep 2008

Note Monday October 03, 2011 16:12 View thread in raw text format
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Maybe the electric pump is failing when hot? Do you still have the old lift pump? It will run with the lift pump dead- there is enough draw from the VP44. Do you have a fuel pressure gauge?
Marc
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