Cavitation on cold start - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 07-14-2008, 11:47 AM Thread Starter
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Cavitation on cold start

Ever since the vegistroke install in my 02 7.3 the engine cavitates when I first start it up. A very light tap to the gas pedal smooths it out to its regular idle. Only does it on a cold start when I'm using diesel. Anyone care to guess whats happening and what should I be checking?

I'm not young enough to know everything.
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post #2 of 5 Old 07-14-2008, 12:32 PM
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When you say "Cavitation" do you mean it's not idling smooth for a few seconds??? If so your engine oil is too full or your not "purging" all of the WVO out of the injectors prior to shutting the motor down.

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post #3 of 5 Old 07-14-2008, 01:31 PM Thread Starter
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Quote:
Originally Posted by Motown Fire View Post
When you say "Cavitation" do you mean it's not idling smooth for a few seconds???
Yes, the engine does rough surging until I tap the pedal. As soon as I tap the pedal the idle is smooth as a babies azz. Only the first start up in the morning.

Engine oil is full but not overfilled. Truck runs for 50 seconds on shut down for purging. According to Vegistroke I should expect a less than 1 minute purge. I would hope that is not the issue. I suppose if nothing else comes up to "check" I'll see about dialing up the purge time a little bit and see if that eliminates the problem.

I'm not young enough to know everything.
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post #4 of 5 Old 07-14-2008, 02:10 PM
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I can always tell when I didn't get all of the WVO out of the injectors, my truck will do exactly what you are saying......

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post #5 of 5 Old 07-14-2008, 02:30 PM Thread Starter
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How long do the rest of you Vegistrokers purge for?

I'm not young enough to know everything.

Last edited by Allofus123; 07-16-2008 at 06:44 AM.
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