tdfive

New Member

• Jun 2, 2011

• #1

Just purchased an unmolestered, well looked after p38 4.0 for bargain money, Runs sweet as a nut on lpg not a single hiccup, But when switch over to petrol, Its a little lumpy, Like a cylinder is out.. Only bought it today, Anybody point me the best way forward, If its running smooth on lpg and lumpy on petrol, It cant be the plugs or leads. ?

Many thanks people.

 

T

tomcat59alan

Well-Known Member

• Jun 2, 2011

• #2

****ty petrol?

 

rewmer

Well-Known Member

• Jun 2, 2011

• #3

Read this thread

 

996TURBO

Active Member

• Jun 3, 2011

• #4

Can't be plugs or leads since it would run even worse on LPG that needs perfect ignition. I bet it's a single point LPG install since i have the same problem.

 

tdfive

New Member

• Jun 3, 2011

• #5

rewmer said:

Read this thread

Click to expand...

Thats a theory, Thanks, It may also be crap petrol, I doubt its been ran on petrol for a while, One question, If i run it on petrol for a hundred mile or so, Say if it starts to run perfect on petrol for instance, Would it be lumpy if i went back to the gas? Bit new to Lpg. Cheers.

 

tdfive

New Member

• Jun 3, 2011

• #6

996TURBO said:

Can't be plugs or leads since it would run even worse on LPG that needs perfect ignition. I bet it's a single point LPG install since i have the same problem.

Click to expand...

Single point yes!

 

C

Catty1952

New Member

• Jun 3, 2011

• #7

I had a similar problem and it turned out to be the MAF had a new one fitted and the problem went away

 

tdfive

New Member

• Jun 4, 2011

• #8

Ran it on petrol for 10 miles or so, Running fine now.. Has been laid up a month or so.

Cheers gang.