| View previous topic :: View next topic |
| Author |
Message |
JLL
Newbie
Joined: 02 Jan 2012
Posts: 5
Location: MADISON NC
276.54 points
|
 Posted: Mon Jan 09, 2012 9:42 am Post subject: 427 ENGINE SURGE AT IDLE |
 |
|
Have,checked all that I know of on 427 engine that continues to surge at idle from 900 to around 13 to 1400.would a hole in vaccum line from carb to distributor cause this.
Thanks for help...
JLL |
|
| Back to top |
|
 |
Paul P
Member
Joined: 15 Aug 2002
Posts: 1947
Location: Townsend, Mass.
67086.30 points
1971 Chevrolet Chevelle
|
| Posted: Mon Jan 09, 2012 1:47 pm Post subject: |
|
|
Welcome to SmokemUp. It could. A hole or tear in the vacuum advance diaphragm in the distributor could also cause it. Was this a sudden thing or always there?
_________________
2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
 |
|
| Back to top |
|
|
William Jones
Member
Joined: 30 Jan 2006
Posts: 750
Location: Lake city, FL
26087.24 points
1971 Ford Mustang
|
| Posted: Mon Jan 09, 2012 6:47 pm Post subject: |
|
|
Is this carbuerated or fuel injected? If its carbed I have seen power valves that are not low enough for the engines vacuum to cause surging problems also.
Bam
_________________
Take the horse out off the barn and let her RUN BABY RUN!!!!!
92 LX 454ci Clevor 9.24@142.53 N/A
71 Mach1 454ci Clevor 10.16@134 N/A 3850lbs race weight "Lost in fire"
03 Cobra Bone stock 12.42 @113
www.ponyexpressracing.com |
|
| Back to top |
|
|
Paul P
Member
Joined: 15 Aug 2002
Posts: 1947
Location: Townsend, Mass.
67086.30 points
1971 Chevrolet Chevelle
|
| Posted: Mon Jan 09, 2012 6:54 pm Post subject: |
|
|
Good point Bam!
_________________
2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
|
|
| Back to top |
|
|
JLL
Newbie
Joined: 02 Jan 2012
Posts: 5
Location: MADISON NC
276.54 points
|
| Posted: Mon Jan 09, 2012 7:37 pm Post subject: |
|
|
| Paul P wrote: | | Welcome to SmokemUp. It could. A hole or tear in the vacuum advance diaphragm in the distributor could also cause it. Was this a sudden thing or always there? |
|
|
| Back to top |
|
|
clay
Moderator
Joined: 24 Nov 2002
Posts: 3006
Location: South Carolina
310483.27 points
1972 Chevrolet Nova
|
| Posted: Mon Jan 09, 2012 9:04 pm Post subject: |
|
|
I have also seen centrifugal weight springs that were a little too light cause this. They would allow the distributor to advance at the higher idle speeds than the factory had in mind (probably 600 or so). Sometimes this advance can get the engine into a surging idle. Slightly stronger springs usually controls it. Clay
_________________
I have done so much with so little for so long, I can now do anything with nothing. |
|
| Back to top |
|
|
10sec.et
Member
Joined: 29 Mar 2006
Posts: 3100
Location: Houston,Texas
334625.24 points
1969 Oldsmobile Cutlass
|
| Posted: Tue Jan 10, 2012 1:41 am Post subject: |
|
|
can you describe the surge ? is it a rapid surge or does the idle seem to intermittently go up and down ?
_________________
| af2 wrote: | It seems we can look at our magical Balls and come up with a fix?
|
|
|
| Back to top |
|
|
af2
Member
Joined: 01 Sep 2003
Posts: 5259
Location: grassvalley, ca
62484.02 points
1933 Willys Coupe
|
| Posted: Tue Jan 10, 2012 9:32 pm Post subject: |
|
|
| JLL wrote: | | Paul P wrote: | | Welcome to SmokemUp. It could. A hole or tear in the vacuum advance diaphragm in the distributor could also cause it. Was this a sudden thing or always there? |
|
The frustrating thing about this post is the quote you left as you did in another post after a couple of suggestions.
It seems we can look at our magical Balls and come up with a fix?
Braklean is your friend when looking for vacuum leaks. No flash. |
|
| Back to top |
|
|
10sec.et
Member
Joined: 29 Mar 2006
Posts: 3100
Location: Houston,Texas
334625.24 points
1969 Oldsmobile Cutlass
|
| Posted: Tue Jan 10, 2012 11:41 pm Post subject: |
|
|
| af2 wrote: | It seems we can look at our magical Balls and come up with a fix?
|
stop stealing my pickup lines 
_________________
| af2 wrote: | It seems we can look at our magical Balls and come up with a fix?
|
|
|
| Back to top |
|
|
Paul P
Member
Joined: 15 Aug 2002
Posts: 1947
Location: Townsend, Mass.
67086.30 points
1971 Chevrolet Chevelle
|
| Posted: Fri Jan 13, 2012 11:46 am Post subject: |
|
|
he said Balls
_________________
2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
|
|
| Back to top |
|
|
10sec.et
Member
Joined: 29 Mar 2006
Posts: 3100
Location: Houston,Texas
334625.24 points
1969 Oldsmobile Cutlass
|
| Posted: Sat Jan 14, 2012 2:30 am Post subject: |
|
|
that was just too funny not to steal it for my sig 
_________________
| af2 wrote: | It seems we can look at our magical Balls and come up with a fix?
|
|
|
| Back to top |
|
|
Paul P
Member
Joined: 15 Aug 2002
Posts: 1947
Location: Townsend, Mass.
67086.30 points
1971 Chevrolet Chevelle
|
| Posted: Sat Jan 14, 2012 7:36 pm Post subject: |
|
|
Yes not your sig...
_________________
2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
|
|
| Back to top |
|
|
af2
Member
Joined: 01 Sep 2003
Posts: 5259
Location: grassvalley, ca
62484.02 points
1933 Willys Coupe
|
| Posted: Sun Jan 15, 2012 1:25 am Post subject: |
|
|
That was the best I could come up with at the time.
Good sig Keith. |
|
| Back to top |
|
|
Paul P
Member
Joined: 15 Aug 2002
Posts: 1947
Location: Townsend, Mass.
67086.30 points
1971 Chevrolet Chevelle
|
| Posted: Sun Jan 15, 2012 1:42 am Post subject: |
|
|
This is way off topic now...
Surge, Magic Balls. Definitely going down hill....   
_________________
2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
|
|
| Back to top |
|
|
Knarley Darley
Member
Joined: 22 Apr 2004
Posts: 1149
536969.38 points
|
| Posted: Sun Jan 22, 2012 7:18 am Post subject: |
|
|
| You guys are hilarious. |
|
| Back to top |
|
|
|
FAQ
Search
Register
Log in
Log in to check your private messages
