V6 subtank into 2.7 - do the fuel pressures match?

[pixelated Lurker Find all posts View Profile Close pixelated]

Hi all,

Just wondering - since I had my 2.7L converted to gas, installed a subtank that came out of a V6 - and it seems to run quite rough on petrol. I took it back to the gas place for re-tuning and they told me its possible the fuel pressure provided by the subtank to the V6 engine is different to the fuel pressure requirement of the 4cyl 2.7L. Does anyone know if this is the case?

I want to redo the fuel line connection tomorrow because I'm not happy with it, but if it continues running rough after that I'm not sure what to do next.

I was told by a mechanic that:
-They can do a fuel pressure test on the tank pump to confirm its right for the 2.7L
-It could be clogged injectors (since they run hotter with LPG?)
-Sometimes after running on LPG for a while cars generally dont run well on petrol? Is there any other reason for this?

I'll post more as I progress... might be of use to someone

[Chuck Advanced Member Find all posts View Profile Close Chuck]

I was told once that the ECU adjusts to the fuel being used over time.
This was in relation to the octane level of the fuel so you had to run a couple of tanks of premium before you would see and difference.
Was also told you could reset the ECU by taking off the battery leads and this would speed up the process of the motor adjusting to the fuel being used.


Then again may have just been a load of crap :lol: :lol:

Costs you nothing to try