Engine: Distributor/carburetor issue

[kpayne9449]

Greetings and merry Christmas!
ok guys I got a 62 get hawk and I am having hesitation issues when I press the gas. The carb was just rebuilt and I added a new distributor, plugs, and cables. It doesn’t quite have the pep when I push the gas either when I’m already driving down the road. Bonus though the engine is running smoother than it ever has. I am just having issues with it dipping out when I first press the gas. Any thoughts?

[tsenecal]

I know that you said the carb had just been rebuilt, but it sounds like the accelerator pump is not working. Can you look down the throat of the carb and look for a spray of gasoline when you go from idle to full throttle? (Do this with the engine off). If a carb kit sits on the shelf too long, the cup that pushes the gas out of the accelerator pump can shrink up and not seal. Good Luck with it!

[kpayne9449]

Ok let me look at that and I will get back with you. Thanks!

[Mike Van Veghten]

A "get hawk" ?
I assume that you mean a GT Hawk ?

1. Ignition timing too low. Set it a little (4° to 6°) higher than the "book" recommends.

2. Does the new distributor have points or an electronic module ? If points, did you lube the rubbing block ? This can easily alter the timing when the block wears from no lubrication.

3. The idle mixture screws may be a little too lean. Turn them out 1/2 a turn, see what that does.

4. Hopefully the rebuilt carburetor has ALL...of your original parts still in place. Many rebuilders don't use the correct parts. I've seen this happen more times than I care to think about. Plus, this complicates the tuning, and gives the exact problems that you seem to have.

Take a look at 1 thru 3 above, readjust as required, good luck.

Mike

[Jeffry Cassel]

Accel. pump. what tsenecal said. auto choke could be a notch or two lean also.

[Bill Graepel]

Don't know if carb has 2 vacuum ports. If so, be sure vacuum advance hose is on correct port because as soon as you open the throttle plate, it will lose vacuum and timing will return to static setting. A simple test with a vacuum gauge.
Hope this helps.

[GrumpyOne]

Float level set too low is a common mistake of the pros and shadetree mechanics. Otherwise see the remarks above...

[kpayne9449]

Ok! Got it running smooth. Only issue now is there is very little pep when I press the gas. Is there a way to increase this? Also the tach isn’t working properly after converting to an electronic distributor. Anyone else have any of these issues?

[BobWaitz]

Ok! Got it running smooth. Only issue now is there is very little pep when I press the gas. Is there a way to increase this? Also the tach isn’t working properly after converting to an electronic distributor. Anyone else have any of these issues?

Whoa there! You have to tell us what you did to solve the problem before you start asking new questions!

[kpayne9449]

Oh! I bent the linkage down a little so the accelerator pump plunger pushes more gas into it. Simple fix and it worked like a charm

[StudeRich]

So does your "New" Chicom? Distributor have a "Tach Wire" on it that you connected?

[Ron Dame]

Most carburetor problems are ignition related. Listen to Mike V. Dial up the timing just a few degrees. Also looking at the timing marks. If they are jumping around, your distributor bushings and/or weights are worn out and you need a rebuild.

[doofus]

Over the years i have found several 289 engines that were actually 259's.dont mind the engine number look at piston top, if flat could be a 259 so measure the stroke as best as you can. 3.250=259, 3.625=289. Luck Doofus

[Jeffry Cassel]

Why aq 'new distributor? Was the original a Delco? They don't wear out and if they do they are quita repairable. You have a problem with your advance. You may what to put a Delco s window back in.