Author Topic: misfire at 3500 rpm  (Read 3264 times)

gorde 5

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misfire at 3500 rpm
« on: 10:39, Tue 04 June 2013 »
Hi got a running proplem in top gear about 60mph starts juddering but backs off when throttle back,had new plugs cap fuel filter,pump etc,drives fine at low speed in every gear,tdc sensor maybe or fuel chamber flooding? any help would be great

Ash-Lee

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Re: misfire at 3500 rpm
« Reply #1 on: 21:42, Tue 04 June 2013 »
What about the HT leads?

I had a misfire under load that was giving me a headache, swapped the leads for a new set and it went away. The old leads looked ok as well.  :?

gorde 5

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Re: misfire at 3500 rpm
« Reply #2 on: 08:00, Wed 05 June 2013 »
No had new ht leads from cgb,runs standard boost with no overboost sensor,fuel pump runs on a switch with fuse,standard psi pressure,carb runs fine no idle problems or hunting,could it be fuel pump relay as it looks pretty old?

Ash-Lee

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Re: misfire at 3500 rpm
« Reply #3 on: 21:45, Wed 05 June 2013 »
Connection for the flywheel sensor clean and secure?

gorde 5

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Re: misfire at 3500 rpm
« Reply #4 on: 14:26, Sat 08 June 2013 »
Hi change tdc sensor after discovering it had been bodged as wiring had been soldered roughly,runs fine now just a slight judder at low revs but i can live with that,oddly enough the speedo started working after a year!