Brought to you in part by:

M&M Restoration & Tool Supply Store

Great deals on auto restoration supplies!

.


NOTICE! The old Mustangsandmore.com is a read-only archive.
Currently the Search function is inoperative, but we are working on the problem.

Please join us at our NEW Mustangsandmore.com forums located at this location.
Please notice this is a brand new message board, and you must re-register to gain access.

  Mustangsandmore Forum Archive
  '69 to '73 -- The Musclecar Mustang
  High Speed Surging

Post New Topic  Post A Reply
profile | register | preferences | faq | search

next newest topic | next oldest topic
Author Topic:   High Speed Surging
traumastang
Journeyman

Posts: 54
From: Palmyra, MO, United States
Registered: Jun 2005

posted 11-03-2006 03:59 PM     Click Here to See the Profile for traumastang        Reply w/Quote
Hi all,

I have had my '73 Mach 1 running for almost a year now after a complete engine rebuild (351 Cleveland with vefry mild cam put in). After about 1000 miles I noticed I was getting some dieseling after turning the car off. I took it to a mechanic to reset the timing and readjust the carb (was rebuilt at the same time the engine was/original carb). He adjusted the timing he said, which fixed the deiseling but then I noticed it had a tremendous loss of power. I took it took work one night and opened it up on the highway. It was then I noticed it would start to surge really bad (almost like it was starving for gas) at around 90-100mph, which it did not do before.

I took it to an older mechanic who is regionally well known for being an excellent carb man. He said they retarded the timing too much and it was "2 teeth off" on the timing. It starts much better now, idles better, but I still notice the surging at high speeds as well as a slight hesitation when I do hard acceleration. It ahs its power back but the surging is concerning to me.

Any ideas what should be my next move?

Scott

SteveLaRiviere
Administrator

Posts: 48752
From: Saco, Maine
Registered: May 99

posted 11-04-2006 08:08 PM     Click Here to See the Profile for SteveLaRiviere        Reply w/Quote
Sounds like a weak fuel pump, if the float level in the carb is correct.

------------------
'70 Mustang Mach 1 - '70 Mustang Convertible - '72 Mustang Sprint - '94 F-150 XL

All times are ET (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Mustangsandmore Front Page

Copyright 2006, Steve LaRiviere. All Rights Reserved.


Ultimate Bulletin Board 5.47d

Amazon Honor System Click Here to Pay Learn More

[Build a free Mustangsandmore.ws Home Page!]

[Posting Pictures]

[About M&M][Members' Pics]

[M&M Conventions] [M&M Mug Shots] [Tech Articles]

[M&M Bookstore] [M&M Restoration & Tool Supply Store]