If you read my prev post, I have been working on fixing a few carb related problems on my stock 86 non feedback, un-lean burned truck. So far, so good. Until it got colder. Seems like these brisk mornings are causing (exacerbating) a chugging while under load. The chugging happens at around 3000 and continues until 3500 rpms, at which point it just stops. Mind you, 2 weeks ago, no problem.

Also, when the slixer gets all nice and warm, the problem stops entirely.

Thanks for the feedback
Josh

What is your valve lash?

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

Ted:

I have no idea. I have owned the truck for the better part of 1 1/2 years and never looked into/read up on/adjusted the valve lash.

Does it have a lash adjustment if it has hydralic lifters?

If the motor is the stock 86 motor then thee is no valve lash. Sounds like possibly an ignition miss or a problem in the carb. Hard to say not being there to check everything out.

Winter blend gas? :shrug:

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If it was easy, everybody would be doing it.

Choke not coming off properly?

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11.02 @ 120.56
http://www.youtube.com/watch?v=EAxRmoDgsdY
Chassis dyno
http://www.youtube.com/watch?v=wd6hFGzLJMc

I replaced some of the vacuum lines as they had hardened and became brittle. Motor was still warm, so no chugging yet.

Shaker
I will check the choke again to make sure. Most likely buy the electric choke with my next paycheck.