Many thanks to all who offered advice regarding my Jeep Cherokee running
rough when switched to operate on petrol. Most ideas revolved around the ECU
requiring resetting. It actually has proved to be a faulty fuel pump. It
runs for a short while before the output drops to a trickle.

My garage has dropped my tank and emptied the petrol into a container - it
is absolutely full of iron filings. These obviously being the ones that didn
't get through the pump filter!

To keep my car on the road, I am now running without any petrol tank on the
vehicle, awaiting delivery of the new pump. The instruction sheet that came
with my conversion says it is crucial that I never let the car run out of
petrol. How important is this?

I get the impression that LPG offers no lubrication but assuming the engine
has been built for operation with Lead free fuel I can't see there being a
problem. Hopefully, the new pump will be fitted within a week but I'm
limiting my trips to an absolute minimum

Any advice would be appreciated

Cheers, Ray

To keep my car on the road, I am now running without any petrol tank on
the
vehicle, awaiting delivery of the new pump. The instruction sheet that
came
with my conversion says it is crucial that I never let the car run out of
petrol. How important is this?

This will depend on how your conversion switches off the petrol.
If it does it by cutting the pump out, then it should not matter whether or
not there is any fuel in the tank, but if it cuts the injectors, and leaves
the pump running, then if you run it without petrol expect pump damage from
the pump running dry.

I get the impression that LPG offers no lubrication but assuming the
engine
has been built for operation with Lead free fuel I can't see there being a
problem. Hopefully, the new pump will be fitted within a week but I'm
limiting my trips to an absolute minimum

When running on LPG there is no petrol going into the engine anyway, so it
matters not whether or not if you have a fuel tank on or not.
As above, the only problem running with no petrol in is possible pump
damage, and you cannot damage the pump if it isnt there!

In message , SimonJ
writes

To keep my car on the road, I am now running without any petrol tank on
the
vehicle, awaiting delivery of the new pump. The instruction sheet that
came
with my conversion says it is crucial that I never let the car run out of
petrol. How important is this?

This will depend on how your conversion switches off the petrol.
If it does it by cutting the pump out, then it should not matter whether or
not there is any fuel in the tank, but if it cuts the injectors, and leaves
the pump running, then if you run it without petrol expect pump damage from
the pump running dry.

I get the impression that LPG offers no lubrication but assuming the
engine
has been built for operation with Lead free fuel I can't see there being a
problem. Hopefully, the new pump will be fitted within a week but I'm
limiting my trips to an absolute minimum

When running on LPG there is no petrol going into the engine anyway, so it
matters not whether or not if you have a fuel tank on or not.
As above, the only problem running with no petrol in is possible pump
damage, and you cannot damage the pump if it isnt there!


And it's already knackered anyway.
--
hugh
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