"Raymond Ramsey" wrote in message
...
My '95 4.0 Cherokee has an LPG conversion. There is a selector switch
giving
the following options 1-Petrol..2-LPG..3-Start using Petrol automatically
switch to LPG shortly after starting. I've been advised selecting 3 is the
best option.

Cold starts do not seem to be a problem. However starting when engine is
warm either switch position 1 or 3 is murder! The engine miss-fires and
runs
rough. Obviously a problem with the Petrol feed. Switching to 2 and all
seems fine (so far) as does switching to 3 after the engine has been
running
for a couple of minutes.

It seems obvious the problem is running using petrol. Have any of you any
ideas on where to start looking? I assume the electrics are fine as all
runs
well using LPG.

Any suggestions would be appreciated, along with where to look for the
parts
that might be faulty/blocked. I've only had the motor a week and a bit so
the geography under the bonnet is alien to me

It sounds to me as if its trying to run on petrol and gas at the same time
when starting from hot for some reason. This would definately be the case if
the exhaust is smokey and it smells of excess fuel when you are having the
problems. The Emulator and or wiring is up the spout for whatever reason..

Tim..


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.522 / Virus Database: 320 - Release Date: 29/09/2003