No power. 65 Stang with 289

RyanB · 04-19-2003, 08:54 PM

Hello everyone!

I have recently got my 65 Mustang running but it is acting strange. If I gun it, the motor sounds like it is under power and stays that way. It never accels. Just bogs and this is sitting in neutral.
Now if I back the throttle off it "wakes up" and takes off.
The effect this has on the road is I cant seem to get going faster then about 35-40 Mph. My stang has a C4 auto trans till I find a proper 3 speed Manual.

Things that I have done so far.
full tune up including Plugs,Cap, rotor and Points.
I have also rebuilt the carb. The carb is a 2 Bbl Motorcraft.

The problem was really bad and cleared up some when I rebuilt the carb, but is still very very noticable.

Any help and suggestions would be great!
Thanks,

~Ryan

matt1190 · 04-20-2003, 09:38 PM

where's your timing set at? How do your spark plugs look after a good, long jab? If you're blaming it on the carb it could be a vac. leak or that its too rich or possibly too lean (does it backfire at all?)

Rev · 04-20-2003, 09:43 PM

Sounds a little like the accelerator pump in the carb may not be functional. Do you get a good long sqirt out of the nozzles when you open the butterflys with out the engine running?

Rev

RyanB · 04-21-2003, 12:43 AM

Yea I am getting fuel when I pull the acell linkage and am looking down the carb.

It does backfire sometimes when I let off the throttle.
Once in a while I also hear it burp up the carb when I gun it.

I'll re-check timing again, though I have been over that a few times.

1tuff66 · 04-22-2003, 07:14 PM

Sounds like you may just be running too rich.

mustangII460 · 04-23-2003, 08:53 PM

Check your Vacum advance also.

RyanB · 04-24-2003, 12:14 AM

Well it turns out it was the timing. I have corrected it and it runs like a champ now. Doing that also fixed the overheating problem I was having. 2 birds with one stone!
Thanks for the suggestions guys !

04-19-2003, 08:54 PM	#1
RyanB Registered Member Join Date: Apr 2003 Location: Santa Rosa, CA Posts: 3	No power. 65 Stang with 289 Hello everyone! I have recently got my 65 Mustang running but it is acting strange. If I gun it, the motor sounds like it is under power and stays that way. It never accels. Just bogs and this is sitting in neutral. Now if I back the throttle off it "wakes up" and takes off. The effect this has on the road is I cant seem to get going faster then about 35-40 Mph. My stang has a C4 auto trans till I find a proper 3 speed Manual. Things that I have done so far. full tune up including Plugs,Cap, rotor and Points. I have also rebuilt the carb. The carb is a 2 Bbl Motorcraft. The problem was really bad and cleared up some when I rebuilt the carb, but is still very very noticable. Any help and suggestions would be great! Thanks, ~Ryan __________________ 65 Stang Project with a 289

04-20-2003, 09:38 PM	#2
matt1190 Registered Member Join Date: Jan 2003 Posts: 66	where's your timing set at? How do your spark plugs look after a good, long jab? If you're blaming it on the carb it could be a vac. leak or that its too rich or possibly too lean (does it backfire at all?) __________________ 66 coupe: 351W 30 over. Fiberglass shelby parts + flares

04-20-2003, 09:43 PM	#3
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	Accelerator pump? Sounds a little like the accelerator pump in the carb may not be functional. Do you get a good long sqirt out of the nozzles when you open the butterflys with out the engine running? Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

04-21-2003, 12:43 AM	#4
RyanB Registered Member Join Date: Apr 2003 Location: Santa Rosa, CA Posts: 3	Yea I am getting fuel when I pull the acell linkage and am looking down the carb. It does backfire sometimes when I let off the throttle. Once in a while I also hear it burp up the carb when I gun it. I'll re-check timing again, though I have been over that a few times. __________________ 65 Stang Project with a 289

04-22-2003, 07:14 PM	#5
1tuff66 Registered Member Join Date: Feb 2003 Location: Wausau, WI Posts: 11	Sounds like you may just be running too rich. __________________ "Isabelle" 1966 Mustang 2+2 289 ci, 4 - speed

04-23-2003, 08:53 PM	#6
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	Check your Vacum advance also. __________________ Frank

04-24-2003, 12:14 AM	#7
RyanB Registered Member Join Date: Apr 2003 Location: Santa Rosa, CA Posts: 3	Well it turns out it was the timing. I have corrected it and it runs like a champ now. Doing that also fixed the overheating problem I was having. 2 birds with one stone! Thanks for the suggestions guys ! __________________ 65 Stang Project with a 289

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