Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > General Tech
GL4x4 Live! GL4x4 Casino







Search
Reply
 
Thread Tools
Old March 2nd, 2012, 06:26 PM   #1
cjh4676
Member
 
cjh4676's Avatar
 
Join Date: 07-11-09
Location: rock island tn
Posts: 45
iTrader: (0)
Mentioned: 0 Post(s)
Default Propane Tuning Problem 350 chevy please help!!!!!!

I have a 350 chevy four bolt main that runs on a propne (Impco 425 mixer). When i push the throttle down about half way the motor just bogs down and sometimes it will back fire when i get about half throttle. Ive turned the mixer adjuster all the way in and turned it out slowly to see if i could get it to stop didnt do anything. Does anyone know why this is doing this?
cjh4676 is offline   Reply With Quote
Old March 2nd, 2012, 06:32 PM   #2
cerial
Senior Member
 
cerial's Avatar
 
Join Date: 09-06-08
Location: Caledonia,MI
Posts: 1,722
iTrader: (3)
Mentioned: 1 Post(s)
Default

Have you checked the Regulator?
cerial is offline   Reply With Quote
Old March 2nd, 2012, 06:40 PM   #3
cerial
Senior Member
 
cerial's Avatar
 
Join Date: 09-06-08
Location: Caledonia,MI
Posts: 1,722
iTrader: (3)
Mentioned: 1 Post(s)
Default

The proper term is gas valve.^^
cerial is offline   Reply With Quote
Old March 2nd, 2012, 07:04 PM   #4
cjh4676
Member
 
cjh4676's Avatar
 
Join Date: 07-11-09
Location: rock island tn
Posts: 45
iTrader: (0)
Mentioned: 0 Post(s)
Default

no i havnt its a brand new system just got it on there.
.
cjh4676 is offline   Reply With Quote
Old March 3rd, 2012, 12:53 AM   #5
cerial
Senior Member
 
cerial's Avatar
 
Join Date: 09-06-08
Location: Caledonia,MI
Posts: 1,722
iTrader: (3)
Mentioned: 1 Post(s)
Default

There is a lot of discussion on the correct way to tune them. You are doing the hardest part right now. Once you get the settings down there is not much to them. If you try what is said in other forums and still have issues call the company and they will walk you through it.

It sounds like the engine is getting to much lp gas to the lp gas valve without seeing anything. Think a gas valve as a fuel pressure regulator(i do). If a gasoline carb is getting to much gasoline because of a bad regulator in line no amount of adjustment(with a few exceptions) will keep it from running rich and flooding/backfiring.
You can play around with the mixers all day long if you have a over sized or a lp gas valve that is turned up to high it will bog down. Some are adjustable others are not. The initial setup can be a headache and it will take a bit of fuel/try&adjust to get everything just right.
cerial is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > General Tech
Thread Tools

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 11:58 AM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2005 - 2012 Cracker Enterprises - Powered by Linux
vB Ad Management by =RedTyger=
Page generated in 0.09097 seconds with 22 queries