Last week the Disco started to develop a bad flatspot and lacked power through the rev range when running on petrol.Some specs first.V8 3.5 injected 1993 model running gas as well.I ran out of gas so i turned it on to petrol and it just felt gutless and slower then usual It idles smooth and i have swapped AFM to check and it still does the same thing.It has new plugs and leads,new rotor and cap,coolant sensor and new fuel filter.Runs fine on gas so im assuming the ignition side of things are good.Just need to know where else i should start looking! Any help would be great.

Thanks
Chris

2 questions then
1: When was the last time you ran it on petrol
2: How old is the petrol since it's last fill

Mike

Double post

I run it on petrol weekly and the last time i filled up was about last week.Hope its not bad fuel because i filled it to 3/4 tank

If you said "Haven't ran it for a year or more and the petrol is over a year old"

I would have said "No octane in the fuel left ... try a new fill of fuel"

But ... Your answer is a good one ..

Meh, I;ve burnt fuel older than that, without issue

__________________

1. fuel filter

2. you need a fuel pressure gauge

__________________

I will have to get a fuel pressure gauge on it some time this week.

Shame it wasn't playing up when you came down to pick the locker up, could've bung a gauge on it then

__________________

You didn;t say when it last had a fuel filter?

__________________