HOME MAGAZINE FORUM RULES SPONSORS CONTACT
     
   
   
Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech

Reply
 
Thread Tools Display Modes
Old 10-19-2011, 08:09 AM   #31
Dion Hildebrandt
Member
 
Dion Hildebrandt's Avatar
 
Join Date: Nov 2008
Location: calgary alberta canada
Posts: 383
Likes: 0
Liked 0 Times in 0 Posts
Default Re: Help!! Engine Miss

Quote:
Originally Posted by Bob Gullett View Post
The problem you describe sounds familiar. I assume your combo is a quadrajet. You don't mention if you have tried a different carb. I have seen where a piece of something gets lodged in a jet and basically causes the engine to run extremely lean. It almost sounds like is running on 1/2 the cylinders. Just another idea. When reving the engine up what does the timing do? Does it stay steady?
Have you opened up the carb? What I quoted from Bob happened to me, I put my car in the trailer sounded great went to the track and wouldnt run. I changed fuel pump cleaned all the filters and lines, changed ignition boxes, plugs (which looked 'normal'ish) and wires, cap and rotor, checked timing chain and the timing, etc. was looking at the big dollar carb and thought 'naw it cant be that' put on my spare carb Voila problem solved. Took my carb down to Bob to have it looked at and there was a chunk of orange silicone plugging a jet. To this day I still dont know where that came from but no more running issues, hope this helps.
__________________
Dion Hildebrandt 6009 STK H/SA
Dion Hildebrandt is offline   Reply With Quote
Old 10-19-2011, 09:54 AM   #32
Dirk Olson
Member
 
Join Date: Mar 2003
Posts: 127
Likes: 0
Liked 9 Times in 4 Posts
Default Re: Help!! Engine Miss

Ben,

Check the voltage at the MSD, voltage should not drop lower than 9VDC. I would check the grounds (no paint ,clean,etc.) May want to ground both heads.
I live in LaCrosse, so I am not to far away I could make a trip down if you want, Another B/S Guy in the Midwest COOL!

Dirk Olson
5036 B/S
__________________
Dirk Olson 5036 STK
Dirk Olson is offline   Reply With Quote
Old 10-19-2011, 10:06 AM   #33
Nitroman
Junior Member
 
Nitroman's Avatar
 
Join Date: May 2009
Location: Boonville, IN
Posts: 21
Likes: 0
Liked 0 Times in 0 Posts
Default Re: Help!! Engine Miss

Strange that it ran fine on the dyno, only to put it in the car and something fail.... I had one that popped and cracked really bad but only under a load and further upstairs(3,000 and up). You mentioned that you literally replaced every ignition component in the system, even said you tried another distributor... Did you by chance try just a straight up HEI of some sort to hooked straight to the battery to eliminate anything else in the car ?? It's possible to come up with multiple bad boxes. What box was used on the dyno ?? One from your car ? Or one that was already there ? I don't think changing the switches did anything to you, the addition of ground wires I suspoect is because the new ones are lighted... I was gonna suggest magnetic pick-up until you said you tried the whole dist. Hmmm... this could prove to be interesting, especially since from the looks of things, you've been fighting it for better than 2 MONTHS !!! As they say "I'd rather be racing !!!"

Maybe go back and make SURE your big red & black to the battery are intact from end to end.

Just trying to help.
__________________
Danny Ellard
Witch Doctor Racing
V/S 3915
Nitroman is offline   Reply With Quote
Old 10-20-2011, 04:05 AM   #34
Ben Kallies
Member
 
Join Date: Jan 2005
Location: Milwaukee, WI
Posts: 105
Likes: 1
Liked 0 Times in 0 Posts
Default Re: Help!! Engine Miss

Dion,

I sent the carb back to Deano and made him aware of the issue. He completely disassembled the carb, and checked all of the passages. Everything looked good.

Dirk,

Thanks for the offer to help. I've got family in LaCrosse - beautiful area. Ground wires are my current focus. I'll be changing some things around even if it doesn't prove to be my problem.

Nitroman,

I plan to eliminate the vehicle wiring from the equation one way or another in the testing process. I think I'll start with what Alan suggested and run all MSD wiring straight to the battery to eliminate the rest of the vehicle wiring from the equation. If that doesn't do it, the next step is an HEI to eliminate the ignition as well. The second MSD box that I tried was brand new, and will be in retested in another vehicle this weekend or next, so that will confirm whether or not that box is good.

-Ben
Ben Kallies is offline   Reply With Quote
Old 01-22-2012, 04:59 PM   #35
Ben Kallies
Member
 
Join Date: Jan 2005
Location: Milwaukee, WI
Posts: 105
Likes: 1
Liked 0 Times in 0 Posts
Default Re: Help!! Engine Miss

Well, it's winter in WI, and I had to put my car to bed without having found a solution to the mysterious engine miss. I did however, make some progress in November.

I installed a brand new HEI distributor with a single wire going direct to the battery. In theory, this should eliminate the entire ignition system from the equation. Needless to say, the problem persisted.

With the HEI still in place, I installed another carburetor that Dean Oliver was kind enough to let me try. The carb was fresh, and set up for a small block, and a bit leaner than my other carb. With this setup, the miss was definitely less severe, but persisted nonetheless.

Feeling pretty confident about the state of the ignition and fuel system, I turned my attention back to the engine. I pulled the covers, and checked and reset all the valves. #4 intake was bit loose, but the rest looked good. I can't think of any other mechanical issues that would cause a miss like this.

I've got a couple of months to let the brain gears turn before I can go back to actually working on the car (damn non-heated garage), so I'd love some input regarding a good springtime game plan. We'll get it figured out eventually. Thanks

-Ben Kallies
Ben Kallies is offline   Reply With Quote
Old 01-22-2012, 06:41 PM   #36
Greg Reimer 7376
Senior Member
 
Join Date: Nov 2008
Location: Glendora,Calif.
Posts: 807
Likes: 20
Liked 134 Times in 45 Posts
Cool Re: Help!! Engine Miss

I thinkI'd start looking for a flat cam, especially an exhaust lobe.
Greg Reimer 7376 is offline   Reply With Quote
Old 01-22-2012, 07:48 PM   #37
MAURICE BLENDHEIM
Member
 
Join Date: Jun 2011
Location: Langley, British Columbia, Canada
Posts: 398
Likes: 4
Liked 4 Times in 2 Posts
Default Re: Help!! Engine Miss

Ben... I would start with a compression test. You mentioned intake lash, any chance something didn't fall into the intake manifold between the dyno and chassis (maybe paper towel or a piece of rag) I would have a look at that intake valve spring also. From what I read it is a miss load or no load. For the heck of it check it again... 1-8-7-3-6-5-4-2. Good Luck!
MAURICE BLENDHEIM is offline   Reply With Quote
Old 01-22-2012, 08:41 PM   #38
Pvt Parts
Member
 
Pvt Parts's Avatar
 
Join Date: Jan 2010
Location: Avon, Indiana
Posts: 327
Likes: 0
Liked 0 Times in 0 Posts
Default Re: Help!! Engine Miss

Two issues that I ran into with similar results. Super Stock Corvette.... fresh motor with engine miss. Looking at it at the track and thinking about pulling it out. I looked down and pulled on the main starter wire, the big one on the solenoid with the battery cable attached to it. It was loose, real loose like someone forgot to tighten it on install. Tightened the nut and the problem was fixed.

New Jerry Haas Comp car. Fouling plugs and killing coils in 4 to 5 runs. Chased the problem for half of the season. Finally drilled two holes in the frame tubes and ran a #10 wire from the frame tubes to each head under the header bolt. Problem fixed.

Maybe this will help. Good luck.
__________________
Scott Wilcox 2193 3x National Champion
SS/A, SS/B, SS/K, SS/L, SS/AM, A/SM, C/SM, B/A, C/A, G/A, H/A
Pvt Parts is offline   Reply With Quote
Old 01-23-2012, 12:09 AM   #39
Adger Smith
VIP Member
 
Join Date: Dec 2001
Location: Texarkana Ark/TX
Posts: 1,876
Likes: 47
Liked 122 Times in 43 Posts
Default Re: Help!! Engine Miss

You have a PM
__________________
Adger Smith (Former SS)
Adger Smith is offline   Reply With Quote
Old 01-23-2012, 08:19 AM   #40
terry1
Member
 
Join Date: Sep 2006
Location: Moncton, N.B.
Posts: 250
Likes: 10
Liked 9 Times in 5 Posts
Smile Re: Help!! Engine Miss

Ben.You have a PM
terry1 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:21 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.Ad Management plugin by RedTyger