rick071155

New Member
my p38 gems engined 4.6 has developed a flat spot on petrol , its most noticeable when you rev the engine from idle , as soon as it comes of idle the flat spot is there until you reach around 1800 rpm :confused: .
if fitted new plugs , the leads are magnacor about 6 mths old , ive changed the coil pack, the air flow meter is only 6 mths old , fitted a new fuel filter ???????? its doing my bloody head in !!!!!!!!!!!!!!!!!!!!!!.
because it runs as it does on petrol its almost impossible to set up properly on lpg so when running on lpg it runs even worse than on petrol .
on the road when on petrol you dont really notice the flat spot when setting off but there is a definate lack of power and a missfire around 2000 rpm .
has anyone got any ideas ? .
cheers rick.
 
just changed the afm back to the original , after spraying contact terminals with switch cleaner , took it for a run , and its spot on cheers eight :) , just shows you only get what you pay for ffs ( i should know better really !!!!!!!! ) thanks again mate .
rick.
 
Thats the second diagnosis I got spot on Tonight,the other was a running fault with a 2.9v6 ford Hearse ! All I need to do now is to work out how to earn a living from it.........
 
Thats the second diagnosis I got spot on Tonight,the other was a running fault with a 2.9v6 ford Hearse ! All I need to do now is to work out how to earn a living from it.........

if your on a roll have a look at my "oil from unknown box" thread please! LOL
 
i have access to autologic, but i believe the afm wont show up as faulty ?
im not sure just what ive been told .
since refitting the original afm the car has never run better !!!!!!!!!!!! , all i did was spray the contacts with switch cleaner .
rick.
 

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