Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

na.....no freezing


>Do you live anywhere where it is cold enough to cause condensation to
>freeze up?
>
>I note the use of the word petrol, but just around freezing temps and
>non or low use of the gas with less than a full tank in it can cause a
>lot of condensation in the gas tank. This can plug up the pickup
>sock/filter in the tank with ice beads.
>
>Maybe try some gas line antifreeze?
>
>Mike
>
>Mick Miller wrote:
>>
>> wish it was.......it works fine on lpg so the spark side and timing is
>> fine........feels fuel starvation
>>
>> >Backfire usually means spark issues to me....
>> >
>> >Mike
>> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> >88 Cherokee 235 BFG AT's
>> >
>> >Mick Miller wrote:
>> >>
>> >> I have a jeep wrangler 4.0 mpi ...with a LPG gas conversion
>> >>
>> >> it is becoming difficult to start and when on petrol it
>> >> stutters........fine if i get it started but as soon as the thottle is
>> >> floored .......back firing and stutters (me thinks fuel starvation?)
>> >>
>> >> on lpg its fine...........
>> >>
>> >> or is it a fault on the petrol side........pump
>> >> ..regulator...injectors?
>> >>
>> >> pump works ........not pressure tested....tank cleaned out.
>> >>
>> >> any help.........thanks

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

na.....no freezing


>Do you live anywhere where it is cold enough to cause condensation to
>freeze up?
>
>I note the use of the word petrol, but just around freezing temps and
>non or low use of the gas with less than a full tank in it can cause a
>lot of condensation in the gas tank. This can plug up the pickup
>sock/filter in the tank with ice beads.
>
>Maybe try some gas line antifreeze?
>
>Mike
>
>Mick Miller wrote:
>>
>> wish it was.......it works fine on lpg so the spark side and timing is
>> fine........feels fuel starvation
>>
>> >Backfire usually means spark issues to me....
>> >
>> >Mike
>> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> >88 Cherokee 235 BFG AT's
>> >
>> >Mick Miller wrote:
>> >>
>> >> I have a jeep wrangler 4.0 mpi ...with a LPG gas conversion
>> >>
>> >> it is becoming difficult to start and when on petrol it
>> >> stutters........fine if i get it started but as soon as the thottle is
>> >> floored .......back firing and stutters (me thinks fuel starvation?)
>> >>
>> >> on lpg its fine...........
>> >>
>> >> or is it a fault on the petrol side........pump
>> >> ..regulator...injectors?
>> >>
>> >> pump works ........not pressure tested....tank cleaned out.
>> >>
>> >> any help.........thanks

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

na.....no freezing


>Do you live anywhere where it is cold enough to cause condensation to
>freeze up?
>
>I note the use of the word petrol, but just around freezing temps and
>non or low use of the gas with less than a full tank in it can cause a
>lot of condensation in the gas tank. This can plug up the pickup
>sock/filter in the tank with ice beads.
>
>Maybe try some gas line antifreeze?
>
>Mike
>
>Mick Miller wrote:
>>
>> wish it was.......it works fine on lpg so the spark side and timing is
>> fine........feels fuel starvation
>>
>> >Backfire usually means spark issues to me....
>> >
>> >Mike
>> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> >88 Cherokee 235 BFG AT's
>> >
>> >Mick Miller wrote:
>> >>
>> >> I have a jeep wrangler 4.0 mpi ...with a LPG gas conversion
>> >>
>> >> it is becoming difficult to start and when on petrol it
>> >> stutters........fine if i get it started but as soon as the thottle is
>> >> floored .......back firing and stutters (me thinks fuel starvation?)
>> >>
>> >> on lpg its fine...........
>> >>
>> >> or is it a fault on the petrol side........pump
>> >> ..regulator...injectors?
>> >>
>> >> pump works ........not pressure tested....tank cleaned out.
>> >>
>> >> any help.........thanks

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

Back fires are unburned gasoline. And most likely a bad spark plug
like Mike has said. I could be burnt valves seeing you use LPG, probably
without the hard seat conversion.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Mick Miller wrote:
>
> wish it was.......it works fine on lpg so the spark side and timing is
> fine........feels fuel starvation
>
> >Backfire usually means spark issues to me....
> >
> >Mike
> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >88 Cherokee 235 BFG AT's

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

Back fires are unburned gasoline. And most likely a bad spark plug
like Mike has said. I could be burnt valves seeing you use LPG, probably
without the hard seat conversion.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Mick Miller wrote:
>
> wish it was.......it works fine on lpg so the spark side and timing is
> fine........feels fuel starvation
>
> >Backfire usually means spark issues to me....
> >
> >Mike
> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >88 Cherokee 235 BFG AT's

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

Back fires are unburned gasoline. And most likely a bad spark plug
like Mike has said. I could be burnt valves seeing you use LPG, probably
without the hard seat conversion.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Mick Miller wrote:
>
> wish it was.......it works fine on lpg so the spark side and timing is
> fine........feels fuel starvation
>
> >Backfire usually means spark issues to me....
> >
> >Mike
> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> >88 Cherokee 235 BFG AT's

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

but lpg works fine ........no backfire

> Back fires are unburned gasoline. And most likely a bad spark plug
>like Mike has said. I could be burnt valves seeing you use LPG, probably
>without the hard seat conversion.
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Mick Miller wrote:
>>
>> wish it was.......it works fine on lpg so the spark side and timing is
>> fine........feels fuel starvation
>>
>> >Backfire usually means spark issues to me....
>> >
>> >Mike
>> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> >88 Cherokee 235 BFG AT's

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

but lpg works fine ........no backfire

> Back fires are unburned gasoline. And most likely a bad spark plug
>like Mike has said. I could be burnt valves seeing you use LPG, probably
>without the hard seat conversion.
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Mick Miller wrote:
>>
>> wish it was.......it works fine on lpg so the spark side and timing is
>> fine........feels fuel starvation
>>
>> >Backfire usually means spark issues to me....
>> >
>> >Mike
>> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> >88 Cherokee 235 BFG AT's

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

but lpg works fine ........no backfire

> Back fires are unburned gasoline. And most likely a bad spark plug
>like Mike has said. I could be burnt valves seeing you use LPG, probably
>without the hard seat conversion.
> God Bless America, ßill O|||||||O
>mailto:-------------------- http://www.----------.com/
>
>Mick Miller wrote:
>>
>> wish it was.......it works fine on lpg so the spark side and timing is
>> fine........feels fuel starvation
>>
>> >Backfire usually means spark issues to me....
>> >
>> >Mike
>> >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> >88 Cherokee 235 BFG AT's

Re: stutters and back fires when throttle floored ...wrangler 4.0 mpi
 

Not at that temperature.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Mick Miller wrote:
>
> but lpg works fine ........no backfire