Bitch on gas... Carby maybe? Help lol

[taslucas]

Running on gas slowly destroys the carby. It dries everything up. Chances are the carby is a little sick but if it runs on petrol then it might not be too bad and probably perfect timing for a rebuild kit.
When on gas, the carby pretty much just works as a throttle body so if the car isn't running very well on gas it's probably nit the fault of the carby.
About 350 to 500 to get a full acid dipped rebuild of a TB42 carb. (Tassie prices though, probably get it cheaper elsewhere)

Sig test. android, MC version 2.4.7.11

[GQ TANK]

The extended rotor button. makes the truck idle better - possibly burn less fuel and should give a longer spark.

Check all you hoses - don't forget the advance lint to the dissy.

check and make sure the carby is not lose (give it a shake).

Make sure that the inlet manifold bolts are tight.

The idle problems can be related to poor vacume. I had to put a carby kit in my tb42s - duel to the truck stop working on petrol. The gas is straight though - less of a problem. I diod have a idle issue at the light prior to putting the kit in though (LPG and petrol)

[antiskeptic]

Just drove to work, thought I'd describe it. It feels like it's a fuel lag on gas. It idles ok but when you want to take off is the issue. No power at all, that's when it stalls. If I keep bit above 3000 rpm it's ok but not good. In first if I take off with good revs it doesn't do much, wants to stall but picks up kinda once revs are high again but it's still struggles. Flick it to petrol and I have power again

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[taslucas]

Do you have any idea what the timing is set to?
As GQ tank said above, check the vacuum advance on the dissy.

I had a lpg system that was in really good order and I still got rid of it so I could have straight petrol. When running dual fuel I don't think it's possible to get the best out of either fuels. Id prefer to have one fuel type tuned to optimal efficiency.

Sig test. android, MC version 2.4.7.11

[antiskeptic]

Don't know if this helps at all guys. This morning is cold here and I drive on gas. It didn't seem to have as many issues, had power and it took alot longer to play up. Now when it did play up it wasn't as bad and it would backfire and bam I'd have instant power again. Strange to me but I hope someone recognises it

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[threedogs]

Backfires mean either an air leak or too lean in the gas Dept. been known to blow air filters off cars.
Also is your radiator full. ????

[taslucas]

Backfires mean either an air leak or too lean in the gas Dept.

Or the timing is out.

Did you check the vacuum advance?

[threedogs]

Should be advanced enough to be "just 'off PING on petrol
,,But as most here have said you can only get it running well one one.

[taslucas]

They recommend 18-22 degrees advanced for gas. That's pretty high for petrol. I fitted a pertronix ignitor kit and tuned the timing back for petrol. It's a lot more powerful on petrol now than it used to be

Sig test. android, MC version 2.4.7.11

[threedogs]

Did you find it hard to find sweet spot for both Lucas.