Jump to content

Due to a hardware failure on the hosts systems, all posts and messages created between May 26th and Jan 13th have been lost. Additionally, if you joined the NPORA Forums community during that time, you'll need to re-register. -NPORA Mod Team *Updated: 05/19/2022 12:15AM PST

Missing and backfiring when warmed up


sailone32003
 Share

Recommended Posts

Hello all is it time to put her to rest? My 93 Pathy started missing and backfiring on the way to work Friday and I also noticed what seemed like a burning metallic smell. Any body else experience this and if so please help to want to put the old girl down. Thanks

Link to comment
Share on other sites

Backfiring is caused when the fuel ignites while the intake valve is still open. Your timing is probably way off. Don't know why it would go off suddenly like that, unless the distributor failed mechanically.

Link to comment
Share on other sites

Check Timing and might as well replace the belt if it hasn't been done in a while. Could also be internally in the distributor. Could also pull spark plug wires off one by one and see if one cylinder is causing your problem.

Link to comment
Share on other sites

  • 1 month later...

If it runs fine when it is cold and then starts running bad and stalling when warmed up, it sounds like the fuel mixture is running too rich. The computer sends more fuel to the engine when cold and is supposed to lean it out when the engine is warm. It sounds like the computer isn't leaning it out. This could be caused by several different problems. If the mixture isnt leaned out, you are basically flooding the engine. This will cause stalling, backfiring and rough running.

 

First, to make sure it is a problem with too rich mixture, you will note that it only occurs when the engine is warm. You will also note some black smoke and unburned fuel coming out of the tailpipe and the burning smell. Finally, if it is running too rich, your gas mileage has probably gone to @!*% and you are getting about 8-9 MPG.

 

One possible cause that is cheap to try is the engine temperature coolant sensor. There is a sting on replacing it in the how-to section of the forum.

 

 

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

Welcome to NPORA Forums

 

Please register to gain full access to the forum.

Make sure you read the Forum Guidelines and don't forget to post a new intro in the New People Start Here! section, to say hi too everyone.

 

-NPORA

×
×
  • Create New...