LPG dead spot

[whocando]

Hi all,

I have a 1991 Camry EFI CSi and recently had LPG fitted.

On petrol the car runs excellent with just a little white/blue smoke puffs at acceleration. Nothing to worry about.

On gas when the car is cold it also runs excellent.

The problem is when the car begins to warm. I am guessing this is when the auto choke begins to open.

When accelerating in any gear, if the revs are below 2200 it feels like it floods. No power.

If I change up gears at 3000 and the revs drop to >2200 then everything is great.

I don't want to keep running the car at high revs to alleviate the problem and the worst part is starting from stop. I have to avoid too much accelerator and split the clutch until I get to 2200 and then I'm off.

The only other symptom is lack of power on LPG after the engine is warm.

I did read on Wikipedia http://wapedia.mobi/en/Autogas?t=6. (item 6) that if the converter is not vaporising the liquid then I can get a flooding effect.

Can anyone offer confirmation or other suggestions before I go back to my mechanic and suggest a solution?

[pandaah]

not having troubles with your air flow meter?... try extracting trouble codes from the diagnostic ports by crossing the 2 pins... i think its TE1 and E1 then turn ignition to on and see how the engine light reacts....

do a quick search and youll see how to read engine light flashes and codes

[George]

Check your LPG pressure. As far as I know for 4th generation LPG systems (if you have such) the pressure should be around 4bar. If the pressure drops as load increase, then you've found it.

When I used LPG I sometimes faced such a problem. Up to my experience, I would recommend to check the following things:
-LPG filter after vaporiser
-LPG pressure under load
-Kind of fuel. I sometimes faced the problem that the gas refuses to vaporize. A simple workaround was to raise the pressure in the gas tank by using free tire inflation service. 4bar would be adequate.

It would also be better if you described your LPG setup.

[whocando]

Thanks pandaah, you just showed me how to check those codes.

I just took the car back to the installers today and they changed the vaporiser which is what wapedia indicated was the possible reason for my simptoms.

It worked!! Yes this 1991 Camry has not dead spots or flat spots so thanks to everyone.