flat spot

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bryvw1973
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Sat Feb 27, 2010 8:38 pm

i have a flat spot when cold if i rev it from idle it splutters a bit but then revs fine.once the engine is warm it doesnt do it any ideas
cheers
bry
dobbie82
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Sat Feb 27, 2010 9:24 pm

The easiest and cheapest thing to check first is your Air Flow Meter, if its got oil in it, the flap could be sticking until it warms up, cleaned mine out with baby wipes and cotton buds lol, very technical you know...
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toby
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Sat Feb 27, 2010 10:21 pm

Check that your plugs are clean, any visible air leaks (spray some WD40 around rubber intake boot and you will hear the engine note change if it sucks WD40 in through a split in the rubber)

Fuel mix maybe? The fuel mixture can only be checked with a machine.

Which engine do you have?

Sometimes a really good thrashing sorts these girls out.
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Brianmoooore
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Sat Feb 27, 2010 11:12 pm

An 'out of spec.' coolant temperature sensor for the ECU ('blue' temp. sensor) can cause exactly these symptoms.
TopSod
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Sun Feb 28, 2010 5:58 am

Mine does this too, I thought it was just because it was old :mad:

Thanks for the info!
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Brianmoooore
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Sun Feb 28, 2010 9:39 am

TopSod wrote:Mine does this too, I thought it was just because it was old :mad:
A five year old F*rd is an 'old' car. A twenty year old E30 isn't! Cars are not all the same.
richy187
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Sun Feb 28, 2010 4:05 pm

Brianmoooore wrote:
TopSod wrote:Mine does this too, I thought it was just because it was old :mad:
A five year old F*rd is an 'old' car. A twenty year old E30 isn't! Cars are not all the same.
Brilliant!!!
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