DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Off Topic > Off Topic Discussion > Other Vehicle Discussion


Notices


Latest Vendor News
AutoAnything
Addictive Desert Designs!
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 08-22-2010, 10:57 AM
rancherman's Avatar
rancherman rancherman is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2010
Location: North Central Nebraska
Age: 51
Posts: 268
Gender: Male
Vehicle: My DD is '97 Dodge Ram 1500
Trim Level: Sport
Color: Black
Engine: 1994-1997 360ci (5.9L) Magnum V8 230hp
Rep Power: 5
Rep:171
rancherman has a spectacular aura aboutrancherman has a spectacular aura about
Default back fire through carb...

Don't you just love tracking down problems?? I have a ferd 460 on propane, for pumping water. It has the electronic ignition, and Impco carb/mixer..... and a million hours.
last couple days, been getting tougher and tougher to cold start. It sneezes back through the carb. eventually it will start and run. This app has been tough on it's engine controller, (ford uses a little aluminum box to manage the distributor) So replaced that right away. not much help. put a new dist cap and rotor, spark plugs too. Plug wires were new this spring.
It was 'dropping a cylinder' last week, thats when I started 'tuning'. (pretty hard on crankshafts when ya got a miss)...This motor is hooked straight to the load, only cushion is the springs in the clutch hub.

I got the dropped cylinder taken care off with the tune up pieces, but now with the popping @ cold start....something has changed!
I rebuilt the vaporizer/regulator a couple days ago.
All the reasons I can come up with for a back fire are: too lean, too rich, vacuum leak, timing. oh, and possibly a exaust man leak? The manifolds are fabricated 'retangular tube' header type. The gaskets between the head and manifold have eroded on a couple of cylinders and are leaking. I am wondering if on cold start, partially unburned gas is hitting that leak, and with more oxygen and heat, it's flashing back, through the now open intake valve and pop?
As for other vacuum leaks, there really isn't any more lines to check, The distributor is mechanical only. I suppose it's possible the intake man gasket is bad. or the carb to man gasket.
ooohhhh... i hate these "could be ignition/could be fuel' type scenarios.
another possibility is the carb. It uses a diaphram to regulate fuel. If that ol dog is stiff, torn, then the signal at startup will cause that too!
Dang it, I have maybe 2 weeks of running that pump and will be done for the year.
Before next summer's season, I think will put in a Pertronix Ignitor electronic ignition. And get rid of that 'mystery ford box'. That will be about 65 bucks/year saving. ( averages one per year).
Any other area to check for hunting down cause of backfire? might as well pile it up!!
Reply With Quote
Sponsored links
  #2  
Old 08-22-2010, 12:51 PM
Toms Blue Ram 1500's Avatar
Toms Blue Ram 1500 Toms Blue Ram 1500 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jul 2009
Location: Dundalk , Md .
Age: 50
Posts: 21,491
Gender: Male
Vehicle: '01 Ram 1500
Trim Level: Sport with Off-Road
Color: Intense Blue
Engine: 1998-2001 360ci (5.9L) Magnum V8 245hp(standard), 250hp(Sport package)
Rep Power: 19
Rep:1588
Toms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant futureToms Blue Ram 1500 has a brilliant future
Default

I had Pertronix on several fork trucks with propane . Never really had much of a problem with them . Have you checked and made sure the plugs are Ok . Check distributor shaft for excessive side play also .
__________________
Reply With Quote
  #3  
Old 08-22-2010, 01:07 PM
RamTech's Avatar
RamTech RamTech is offline
Dodge Ram Forum Senior Member!

 
Join Date: Nov 2009
Location: Johnson City, TN
Age: 43
Posts: 12,120
Gender: Male
Vehicle: 2004 Dakota Club Cab 4X4
Trim Level: SXT
Color: Bright Silver
Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
Rep Power: 14
Rep:1824
RamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant future
Default

Once you verify the timing, you may want to check for a sticking intake valve, weak/broken spring, pushrods, etc.
Reply With Quote
Reply

Bookmarks

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


Advertisement






All times are GMT -4. The time now is 11:44 AM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum