tb42 duel fuel carby spark plugs

[bohall]

gday ive read that the duel fuel tb42s should use a bp6es not the reccommended bp5es to allow for the diffrence in heat on gas am i correct ?

[threedogs]

Most ppl will use a spark plug with a higher heat range,
on dual fuel motors, plus advanced timing for gas

[bohall]

Ok so they recommend bp5es so im guessing bp6es is for gas/petrol ?

[bohall]

Sorry thats for ngk plugs

[jay see]

Yep that's correct.
I've just put in platinum plugs, but you can use the standard ones. I don't want to do the job again in a hurry. Just make sure that it's a #6.

[bohall]

#6 lol ???

[bohall]

I changed the plugs plus reduced the spark plug gap to .7mm instead of 8 it now seems less responsive on gas as well as sputters at 3k revs

[threedogs]

Go back out to .8 slightly larger spark

[bohall]

Still doin it wont rev out properly pasy 2.8rpm on gas . Fine on petrol

[jay see]

Still doin it wont rev out properly pasy 2.8rpm on gas . Fine on petrol

I'm going through the same.

After tappet adjustment perfect right through the rev range pass 4000 on patrol, gas still blogs down a little but big improvement.

Due for a service at the gas place. Will speak to them about it. Maybe needs timing to be advanced a little.

[bohall]

It now revs about 3 grand on idle on petrol . I think there may be a spring missing of the carby does anyone have any help they could provide like a pic of the carby etc

[bohall]

Help theres no spring back on the butterfly on the carby

[threedogs]

can you see if its lying on the motor anywhere, maybe only one end come unstuck

[bohall]

Na its some bloody switch giving me grief atm

[bohall]

Running gr8 on petrol . Will swap to gas idles for a bit then dies . If i try to start on gas it gasps then dies

[bohall]

Ok so got it goin again on both now .

[jay see]

Ok so got it goin again on both now .

What was the problem?

[bohall]

Needed the gas tuned

[bohall]

Does anyone know much about the fast idle plastic lever on the side of the carby?

[taslucas]

Does anyone know much about the fast idle plastic lever on the side of the carby?
I know that mine gets stuck on occasionally and it'll idle at about 1200 rpm. I just flick it with my finger and it's right again. I'm not willing to start pulling it apart because it'll probably end in tears lol

tappa lives!

[bohall]

Yeah mine gets stuck from time to time can be annoying