pauljr
Junior Member
I have a 2004 1500 with the 4.7 magnum engine running on petrol and LPG,
When engine is cold It starts instantly on turning the key, but when I push down the throttle it stumbles and will not pick up the revs until the LPG cuts in then everything is fine it goes very well, the LPG can be turned off manually, so when engine is hot I’ve turned off the LPG and it runs solely on petrol, however although it runs much better than when cold it’s still lumpy and lacks any real power, there are no codes coming up on the garage scanners they use Autel and snap on scanners.
Does anybody have any ideas as to why it runs like this, or are their any other test I can do to find the fault, many thanks.
When engine is cold It starts instantly on turning the key, but when I push down the throttle it stumbles and will not pick up the revs until the LPG cuts in then everything is fine it goes very well, the LPG can be turned off manually, so when engine is hot I’ve turned off the LPG and it runs solely on petrol, however although it runs much better than when cold it’s still lumpy and lacks any real power, there are no codes coming up on the garage scanners they use Autel and snap on scanners.
Does anybody have any ideas as to why it runs like this, or are their any other test I can do to find the fault, many thanks.
