LPG Discussion Forum

Cheers stuart
did It run ok after that, what mpg do u get?


hi mate, it runs fine and revs fine.
but as for driving, i have no idea yet
as i cant take it out on the road as it needs front panelling replacing due to front end smash.
then mot, tax and insurance.
havent been able to get it ...

Also iv noticed a strange whirling sound comming from around the vaporiser even for a little while after the engine is stopped but can't find out what it is. Strange :?

i had this on my astra when i was trying to get the gas system working.
i had all four injectors off the car for testing ...

Yes it is correct, the system does switch over quickly in summer. It'll take a couple or three minutes in winter.
aww i see. that would explain why it switched over straight away.
i thought maybe something wrong with a sensor and it was letting it switch over to early.

When running on LPG you ...

well started it up on petrol then flicked the gas switch.
expecting for it to flash red for a while until it got upto normal temp.
before it would switch over.
but it switch straight over to gas....

you heard the clicks from the solenoids and relay
and heard the engine noise as it switches between ...

john_d wrote: dunno, appartently he was going to put gas in today so he's probably dead!

ohh dear, talk about run before you can walk...

does he still have the tank mounted at the rear end of the car.

or has he now moved it forward to behind the rear seats ?

Good stuff.
I know you won't want to hear this but ideally,
because the power has been off to the ECU's, you will need to let them auto-calibrate again.
The best way would be probably 50 miles on petrol and then 50 on gas.
well that will have to wait until i got it repaired and mot'd,taxed and ...

of course rossko how right you are.

from the vap to the injectors would be full of air.

i think from all the excitment of it switching over to gas,
i didnt think of the obvious..

right update.

i managed to get 4 jubilee clips for the injector pipes and 2 for the pipe between vap and distrib.

checked the nipple holes before refitting the injectors and all are clear.

fitted the new distrib i got from ebay.

put the loom back in. reconnected everything up, refitted the ...

you know i was going to say last night.

the time you messed about with that knackered gasket and the tubes of sealant,
different types of hose, clips and nipples etc. and god knows how many trips to the auto shop and the like.
it would of worked out so much cheaper to order the hoses, nipples and ...

i will check the small vacuum hole, thanks for the info there.

hole is clear.... throttle body is ready to go back on.

They may well have been a once only crimp type so you won't be able to re-use them.

If not replace with petrol pipe clamps or jubilee if you can get them small enough.

ok ...

ok the lpg wiring loom is 100% fine

all wires from end to end are ok.

just need to tape the loom up in a few places then put the plastic tubing back over the loom
and retape the joints. and its ready to go back in the car.

question.

the 4 small crimp hose clips i removed from the injector to ...

yes i gave that a bit of a clean today with an old toothbrush and a can of carb cleaner.
along with the part of inlet manifold i took off.

i will check the small vacuum hole, thanks for the info there.
il also check the fittings that are screwed into the manifold that the injectors fit into.
to ...

yer i understand that....
shame i couldnt get some heatshrink over it.
but i would of had to cut the yellow wire too.
and didnt want too..
its well taped up with insulation tape so should be ok now.

hi pj,
yes it could well be orange and blue...
the wire was fairly dirty and it wasnt clear to see the stripe colour.

not able to test it yet. as ive taken a fair bit off the engine.

lpg injectors,inlet manifold,lpg distributor,throttle body etc.

the lpg wiring loom is sitting on my bench.

i ...

right decided to pull the lpg loom out of the car today,
and as i was unplugging the connections between the petrol loom and lpg loom.
i came across a corroded broken wire
on the petrol loom side.
the wire goes between the plug that connects to the lpg loom
and the plug that goes onto the petrol ecu ...

yes i know its just a rebuild kit....

no idea if the vapouriser is the original one or been replaced or even rebuilt before.

but first things first .to get rid of the two fault codes..

(re injectors)
Only dabs, they are not designed for continuous powering.

ok noted, thanks rossko


Going back a bit ...
the gas should come roaring out if you have the vapour hose open. Making shh noise and getting a bit of a smell later sounds a bit too pansy really? Should be able to blow ...

Why not do what everyone else does? Take the manifold off, drill it, tap it and fit the nipples. Then put it back on and connect it to your injectors with the flexible low pressure LPG hose that Tinley Tech will by then have supplied you with?

because Gilbertd it seems by reading the thread ...

well them 3 wires from the camshaft sensor do go to the top plug of the petrol ecu.

i took the back part of the inlet manifold off and it made it so easy to get to the lpg injectors.
i disconnected all the wires and took the 4 injectors out.

tested with a digital meter on ohms..

between 18.8 - 19 ...