hesitations

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Dec 10, 2002 | 07:36 PM

idealtrucks

Thread Starter

Fleet Mechanic

Joined: Jul 2002

Posts: 1,297

Likes: 34

From: S/W Virginia

hesitations

my truck is 1970 240 6cyl. manual choke, manual everything. It has a 1 barrel carter carb on it and it has a bad hesitation. Even after it gets warmed up, if i have the choke all the way off it hesitates. Not just off idle but all the time, like if im going up a hill or something and give it gas pretty fast, it will just bog down. if i give it to it a little at a time it does fine. ive put a rebuild kit in my carb and my accelarator pump is squirting a good stream of fuel. any suggestions??

thanks.

Dec 12, 2002 | 04:55 PM

mantta

Posting Guru

Joined: Feb 2001

Posts: 1,728

Likes: 0

From: Keweenaw Bay, MI

hesitations

Check your ignition timing and also check to see if your vacuum advance is working. Sometimes them rubber diaphrams in them break and you have to replace the advance assembly. It sounds like it is your vacuum advance.

Dec 13, 2002 | 11:10 AM

TallPaul

Post Fiend

Joined: Jan 2000

Posts: 5,860

Likes: 4

From: Metro Detroit (Redford)

hesitations

Fuel pump bad or filter clogged?

INLINE SIX POWER!

'95 F150 XL
300 Cubic Inches of Low RPM Truck Torque! And twin-I-beams too!
"Drive a stick young man! There'll be time for automatics when you're old and unable."

Dec 13, 2002 | 11:26 AM

idealtrucks

Thread Starter

Fleet Mechanic

Joined: Jul 2002

Posts: 1,297

Likes: 34

From: S/W Virginia

hesitations

i have a new fuel pump and filter its not that. how much advance should it have and what should the ignition timing be set at?

Dec 13, 2002 | 11:36 AM

mantta

Posting Guru

Joined: Feb 2001

Posts: 1,728

Likes: 0

From: Keweenaw Bay, MI

hesitations

If I remember right, your ignition timing is set to 6 degrees before top dead center. Make sure you remove and plug the vacuum line that attaches to the vacuum advance diaphram. To see if this advance is working, remove your distributer cap, draw a vacuum on the hose you took off the advance, you should see movement in the breaker point plate in the distributer. here should be no leakage, if there is, you have a hole in either the hose or the diaphram. This would cause your hesitation. Have fun!