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Registered User
Join Date: Nov 2012
Posts: 2
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911SC hissing, back-firing when warm
Hi, have a problem please! 1978 Porsche 911SC - have been standing for 5 years, removed, cleaned out, refitted tank, fuel lines, new fuel filter, fuel pump, recond fuel distributor unit, new plugs and lug leads. Car running smoothly for about 4km's, then starts hissing and back-firing. Not starting again until cold. Desperate for advice please
Last edited by irmabark; 11-18-2012 at 10:57 PM.. Reason: Replace thread starter |
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11-18-2012, 10:52 PM
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Registered
Join Date: Oct 2006
Location: MYR S.C.
Posts: 17,321
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first thing is to check fuel pressures.
check the power to the warm up regulator (WUR). check for air leaks. if you have a thermo time valve (TTV), check that is opens to allow vacuum to the WUR. should only take about 20 seconds to open.
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86 930 94kmiles [_  _] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD88 BMW 325is 200K+ SOLD 03 BMW 330CI 220K:: [_ _] RUNNING: [__] NOT RUNNING:01 suburban 330K:: [_ _] RUNNING: [__] NOT RUNNING:RACE CAR:: sold |
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11-19-2012, 02:58 AM
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