Fuel + Spark = NO START!...Any Ideas - AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand

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Old 06-09-2016
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Question Fuel + Spark = NO START!...Any Ideas

Howdy all towed Home again Today...............
that's twice since Saturday
Ok went to the shop Saturday it ran sorta rough to start with then fine no restart tow home
fuel pump works plenty of fuel at the fuel rail good spark I put a screwdriver in a plug cap to test
then yesterday it started after a lot of cranking idled fine I ran it for a few mins stopped it then it started up again fine ? I thought I might of had a airlock in fuel line after thinking my fuel gauge was wrong ?
Today............ started after a lot of cranking again ? I was a bit worried about going down the servo so after turning around in the yard I turned it off count to 10 then restart vroooom fine ran well on way to servo although I thought it didn't shift into top ??? (trans only rebuilt about 3 yrs ago 5000 klm)
stopped at servo NO RESTART!.........Tow Home

Its like its Flooded!...flutters and tries to start after much cranking
Cleaned the throttle body and all the sensors today bit sooty I think the LPG makes it dirty checked all connections and fuses all good?

all sensors are under 3 yrs old and 5000 klm driving
Ignition and plugs are near new
I am really pulling my hair out here
anyone got any ideas
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Old 06-09-2016
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Is this running on petrol or gas? If it becomes hard to start on petrol, ie long crank time, it might be the non return valve on the fuel pump. When bad your fuel pressure will fall away and the system needs to re=pressurise.
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Old 06-09-2016
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petrol crank rustynuts switched to petrol at the moment but if I was on gas it always starts on petrol then switches to gas after the start return valve must google it thanks
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Old 07-09-2016
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Quote:
Originally Posted by LuluBelle View Post
petrol crank rustynuts switched to petrol at the moment but if I was on gas it always starts on petrol then switches to gas after the start return valve must google it thanks
never noticed your vehicle was petrol/lpg

On the dual fuel vehicle I owned, it never ran ideal, as the ignition curve is so different, and an "old-fashioned" system could not accommodate this well.

Other people I know with much more modern dual fuel vehicles have also experienced similar problems, which included fail-to-start and poor running
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Old 07-09-2016
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ive had this problem many times with customers vehicles

one thing in common with them all

E10...
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Old 07-09-2016
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not running E10 just normal unleaded going to check all the vacuum hoses soon and crank it when the battery is charged
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Old 07-09-2016
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all the vac hoses look ok fuses are fine gave it a bit of a crank but no go don't want to flatten the battery I will check all the sensor wires tomorrow but the 5 amp fuse has not blown so I seem to think they are fine engine smelt of fuel after cranking ...............
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Last edited by LuluBelle; 07-09-2016 at 06:26 PM.
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