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Article #564

Re: Hesitation Problem in 1970 914-6

#564
From: Bill Landsborough
Date: Mon, 13 Jan 1986 22:52
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In article <839@spp2.UUCP> hasiuk@spp2.UUCP (Lee Hasiuk) writes:
>I have a 1970 Porsche 914-6 with a peculiar hesitation problem.  The car
>runs fine if I 'take it out for a drive'.  However, if I try to use the
>car again after a period of 15 minutes to 1 hour, it starts and idles fine
>but the first time that I go for higher (> 3500) rpm under load conditions 
>(as opposed to just revving the motor) it hesitates and bucks.  After several
>blocks (sometimes up to a mile) it will be back to normal again.  It seems
>to be independent of outside temperature or the distance which I drive, as long
>as it's more than a mile or two.  A recent tune-up by a first rate mechanic 
>didn't change anything (I thought it would so I didn't bother mentioning the
>problem).
>

I have had the same problem with a Toyota 22R engine and I think it is
because the engines are designed to run so lean that it is marginally
too lean at that time and therefore won't run clean at first.  I never
found the real cause of the problem though.  It could also be in the
mysterious EPA emmision devices which are confused as to whether the
engine is up to temperature or not.  The problem would go away in
about a mile so I never pursued what it was caused by.
My truck would not have any power when this was happening either.
Sounds like we had/have the same problem.

Bill Landsborough

----

"Love is patient and kind; love is not jealous or boastful; it is not 
arrogant or rude... Love bears all things, believes all things, hopes all
things, endures all things."   1 Corinthians 13:4-7
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From: marauder@fluke.UUCP (Bill Landsborough)
Newsgroups: net.auto.tech
Subject: Re: Hesitation Problem in 1970 914-6
Message-ID: <3013@vax4.fluke.UUCP>
Date: Mon, 13-Jan-86 17:52:42 EST
Article-I.D.: vax4.3013
Posted: Mon Jan 13 17:52:42 1986
Date-Received: Wed, 15-Jan-86 01:09:30 EST
References: <839@spp2.UUCP>
Distribution: net
Organization: John Fluke Mfg. Co., Inc., Everett, WA
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