class6

Anyone know what size main jet it should have. Bought this truck for my daughter. I have everything correct as far as I can tell. It is a 3 speed and runs good until you get in to 3rd then starts to stumble and has a hard time pulling the gear. Plugs are burning a lite tan. But what is confusing me. When you peddle the throttle it gets worse. Lifting seems to help. It catches up.

weldcrane

the jet size could be ok sounds like a fuel delivery problem filter if it has one carb might just need to be rebuilt starving for fuel ?

BlueOval

http://www.greensalescompany.com/ If you need any old stock parts , these guys are good help. I sold them a bunch of old inventory several years ago.

class6

I just put a new/rebuilt carb on from autoline. The old one was leaking at the accelerator pump. Next I guess would be to check jet size. Timing question. I disconnected the vacuum line. Set the timing to 6*. As soon as I reconnected it went to 16*. Is this the way the old distributors work. Or is the advance shot? Everything inside looks fine.

class6

[ATTACH=CONFIG]565701[/ATTACH]Short bed

F-2 Speedy

iTrader: (6)

It might be timing, thats odd that it increase by 10* by hooking the vacuum up..........if you have a hand pump thingy hook a hose on the vac advance module while its running pump it and see if she revs up. Im a cheby guy so good luck.

Edit: did you plug off the vac line when setting the timing ?

class6

Yes. Disconnected line and set timing to 6*. Hooked it back up, at idle speed and it jumped to 16

turbo2256b

iTrader: (1)

Should have a Ford Load O Matic dizzy they just work off vacuum no mechanical. Most replace them with a newer type with out points. Some rebuilt carbsmight need the float level checked as they have different settings for different apps.

F-2 Speedy

iTrader: (6)

did you plug off the vac line

class6

Yes I did /\