Get information on Eagle, GMC, Prevost, MCI and other bus conversionsRV and bus conversion info since 1996.
Share Your Feedback    
       
 
  PRINT PAGE 
 
 
RV Classifieds
  2000 Safari Trek 2430 - $32,995
  1973 MCI 8 - $79,000
  1998 Sierra Forest River - $13,500
  1998 Wanderer by Thor Ind M-36 - $10,500
  2001 Carriage Cameo - $37,500
  VIEW ALL
  Search RV Classifieds  
  Classifieds Policies
  Benefits for Dealers  
  Sell Your RV  
  Dealer Signup  
 

Useful Links
 
RV Community
  Discussion Groups  
  RV Articles  
  RV FAQs  
  RV Classified Ads  
  Virtual RV Park  
  Shop at our Store  
  RV Lifestyle Books  
  Rate Your RV  
AllThingsRV.com
  MyRVGuide.com  
  RVMechanic.com  
Advertise With Us
BECOME A MEMBER
RV Resources
e RV Loans
Sculptures for your RV
Visit Rio Rancho, NM for Winter
  RV Dealers  
  RV Manufacturers  
  RV Rentals  
  RV Glossary  
  RV Types  
  RV Ratings  
 

Why do you think my engine back fires??

Home > Discussion Forum > Mechanic's Corner - Engines

Email Author email Georgia Southern  Reply to Message reply to message  Post New Message post new message      search forums
hidden layer
ATTENTION: All Postings that advertise items for sale will be deleted from the Discussion Forum. You may post sale items for free in the Classifieds section. Sign up now.
All Messages in ThreadAuthorDate
Why do you think my engine back fires?? Georgia Southern 6-8-03  
Well this is really on a boat with a mercruiser engine. It is a normal car engine for the most part. It is a mercruiser 165, 250 hp inline six with very low hours. The engine was running perfect untill it warmed up(Not hot). Therefore I replaced the distributor cap, rotor, and coil. Now my engine is backfiring under a load. Any posibilities? Remeber that the engine ran very well cold. It would pull a skier right out of the water, yet after 30 min on the lake it started cutting out. It no longer cuts out on me anymore just backfires!!!! Please advise me what I should do. Thanks Reinhardt
Re: Why do you think my engine back fires?? Georgia Southern 6-8-03  
I also rebuilt the carburator thinking that was causing the engine to cut out. But it changed nothing, therefore I replaced all plugs, distributor, rotor, and coil. Thanks again
Re: Why do you think my engine back fires?? Kenneth 6-10-03  
What did you find out? My 454 is doing the same thing and my mechanic can not figure it out.

1-800-264-6757
Re: Why do you think my engine back fires?? bob 6-8-03  
I hope you changed all fuel filters???
did you cross a plug wire?? Also pull plugs again see if you didnt bend an eletrode..(I did that) Did you change plug wires??
Re: Why do you think my engine back fires?? GM tech 6-9-03  
There could be a couple problems.1 is this motor carb or injected? It sound like a lean run problem,oooooor vacuum leak,ooooor A week lifter.Also I have seen bad coils do this too.Condencer if it has points.
Re: Why do you think my engine back fires?? Adam 6-10-03  
This happened to me on the Chevy 454 in my RV. After replacing plugs, wires, cap and rotor, it ran fine cold, but when warmed up, began backfiring out exhaust. I asked a dozen people what the problem was and, of course, got a dozen different answers. The solution to my problem was the module in the bottom of the distributor. As it was explained to me, it runs fine while cold because there is a small crack in the circuit board inside this module. When the engine heat finally gets to it enough to expand the crack, this leads to poor spark, therefore it backfires when burning off unused fuel in cylinder. While I had the distributor apart again, I also replaced the coil just to be on the safe side. Hope this helps!
Re: Why do you think my engine back fires?? Sam Watson 6-10-03  
A bit of definition here. Backfire is a burning in the intake system and popping back out of the intake manifold, more commonly known as "spitting back". Explosion(s) in the exhaust system are technically known as "after-burn" and are the result of unburned fuel entering the exhast system and then being ignited by a subsequent ignition source. The unburned fuel gets into the exhaust system because of: 1. Ignition misfire. 2. A mixture in a cylinder that is too lean to burn. The next time the engine dies, check the fuel in the carb.
Re: Why do you think my car back fires?? Tavares Williams 5-10-07  
I turn the key it says cher cher cher cher cher pow pow.I dont know what that is can some one help?
Required fields in red
For more info about a field, place your mouse over the More Info icon.
Subject:
Your Name:
Your Email:
Message:



Code is case-sensitive. Helps stop SPAM.
       



Watch me paint, sculpt and buy my art
PRIVACY POLICY  |  TERMS & CONDITIONS  |  © 1996 - 2008 RV-Coach Network - All Rights Reserved  |  Web Site by ITtelligent