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stelios101
 Post subject: Misfire.
PostPosted: Sun Apr 12, 2009 9:02 am 
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Hi everyone,
can anyone help with this problem?
On two occasions when I start up my '91 928 s4 she misfires, so I switch off then restart and all is OK, this has now happened on two seperate occasions, does anyone have any ideas? A lazy injector or a fuel sensor problem,
Is this a sign that something is about to let go?
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tr7v8
 Post subject: Re: Misfire.
PostPosted: Sun Apr 12, 2009 11:57 am 
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Does it keep misfiring once started or does it stop when it warms up, is this hot and/or cold?

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stelios101
 Post subject: Re: Misfire.
PostPosted: Sun Apr 12, 2009 12:21 pm 
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I don't know if it continues when warm as I switch off after about 30 secs, and only happens when engine is stone cold, I'm thinking about ignition coil.
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Brett928S2
 Post subject: Re: Misfire.
PostPosted: Sun Apr 12, 2009 12:39 pm 
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Hi :)

Change the dizzy cap and rotor arm and plugs....

In 99% of cases those things cause the miss....

All the best Brett :)

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tr7v8
 Post subject: Re: Misfire.
PostPosted: Sun Apr 12, 2009 11:53 pm 
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stelios101 wrote:
I don't know if it continues when warm as I switch off after about 30 secs, and only happens when engine is stone cold, I'm thinking about ignition coil.

Could be although they normally give grief when hot. Could be plug or injector or possibly a plug lead, but I can't think of why they'd clear on a restart?

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http://tipec.net/region_southeastlondon.php

2018 Mitsubishi Outlander PHEV
2005 Porsche Cayenne S SOLD
2000 Jeep Grand Cherokee SOLD
2010 Mazda MX5 Mk3.5 2.0 Sport Tech SOLD
2000 Porsche Boxster S SOLD
1987 Porsche 944
2019 Abarth 595C

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