Question about Ford F-250

1 Answer

I have a 1991 F-250 XLT 4x4 4.9L .when i start it up for the first time each day runs good .but try starting it up later that day runs ruff misses an back fires.also when im at 55mph runs good for few mins then starts missen an usen lots of gas.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 674 Answers

You have a fuel injector leaking
you need to pull your spark plugs and find the cyl that is different and that will be your bad fuel injector and alos replace your plugs
good luck
paul

Posted on Nov 24, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

It is running ruff


did you disconnect the battery when you changed the starter? are there any codes stored? like james stated if it was starter related it would have happened right after but I also can't think of a starter causing any problems beyond not starting. if no codes I would check plugs, could be bad gas, and make sure all connectors are plugged in from when the car was worked on , something might have came loose or possibly broke.

Mar 19, 2014 | 1997 Oldsmobile Aurora

1 Answer

2000ford f-150 xlt v6, hasbeen running rough, went to blow some driveways this morning, it started twice then after the second one it wouldnt start. it didnt hit a lick.


Use a bottle of yellow HEET dry gas / fuel dryer to remove moisture in your fuel tank.

Check the coil + wires for water / moisture drip / wetness.

Jan 19, 2014 | Cars & Trucks

1 Answer

Some days no problem but other days it starts then when I go to start it it won't start Husband comes home later in day it starts right up. But runs ruff ( like vacuum leak) doesn't have one we checked


Vacuum leak would make it idle high. Sounds like the throttle body has to be cleaned. Also try some injector cleaner in the tank. More than 1 bottle at a time... 2 or 3 per full tank. Not a fan of these, but they will help a bit.

Oct 21, 2013 | 1998 Ford Expedition

1 Answer

2.9L bronco 2 will not idle without missing and backfiring was running good done all at once


It sounds like your timing belt jumped a tooth. You'll have to realign your camshaft to crankshaft and change your timing belt. Also, did you recently fill up?

Feb 28, 2012 | 1986 Ford Bronco II

2 Answers

Runs ruff at idle and when excellerating is missing


yep change the pump! and new filter too!!!

Jan 13, 2010 | GMC Jimmy Cars & Trucks

1 Answer

Runs rough like missing


check the fuel pressure when it is idling for about the time it takes to die see if it drops.most likely gonna need a fuel pump

Jun 22, 2009 | 1999 Oldsmobile Silhouette

2 Answers

Ruff running Engine-no power-fine at idle


It could be one of three things. EGR valve, IAC (Idle Air Control), and last your cat being clogged. Not likely to be a clogged converter unless you have but the Ford through some pretty good hell. I would go with the EGR and IAC first and check those out first then move on from there

Apr 26, 2009 | 1995 Ford Explorer

1 Answer

Vechicle missing;


check egr valve or vacum lines going to and from. Behind carb on manifold on rear of motor

Apr 07, 2009 | 1992 Chevrolet Astro Extended

2 Answers

1991 deville idling very ruff


Hi you should change the coolant temp sensor this is a white sensor on top of the intake and is part ot the computer system.

Dec 30, 2008 | 1991 Cadillac DeVille

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

131 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Fordexpert

Level 3 Expert

5331 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...