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FUel issue?? starts hard missies white smoke then runs fine

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Old 07-25-2016, 09:03 PM
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FUel issue?? starts hard missies white smoke then runs fine

Have an 97 12v and recently sometimes it starts hard, runs very rough, lots of smoke, gray, after 30 seconds starts to run good. Once in a great while after running it will start to miss, I get rpms up for 10 seconds and the its ok. Plan to change fuel filter. whats the best way to test the 2 low psi fuel pumps?

Looks like the problem will slowly get worse so looking for advice on narrowing the problem down.
Old 07-26-2016, 08:27 AM
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Bet you have cracked hose or rusted line............

Easiest is to just get a tapped banjo bolt from a place like Genos and check it at the inlet of the Injection pump.

You should only have 1 low pressure transfer pump though.
Old 07-26-2016, 02:59 PM
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You have 2 low psi pumps?
Old 08-02-2016, 09:11 PM
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Is there a tank pump?
Old 08-03-2016, 09:37 AM
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Originally Posted by case310350
Is there a tank pump?
Nope............. Only the mechanical pump on the side of the block.
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