300 drop in MPG
Thread Starter
|
Elder User
Joined: Aug 2009
Posts: 946
Likes: 0
From: Clearfield County, PA
300 drop in MPG
About two months ago i noticed a drop in mpg with my 300. I seemed to get 17-19 on avg on the hwy. Now it seems i get about 10-12 until the truck gets warm, about 20 min it seems then it levels back off. What could be my problem?
Postmaster
Joined: Mar 2008
Posts: 2,703
Likes: 7
From: Des Moines, Iowa
theres a few things you can check. have you replaced your fuel filter, spark plugs, distrubutor cap and rotor lately? seems the theme the last 2-3 weeks has been about fuel injectors... there is another post about a 300 with a miss (should be near top) and I believe he is going to do his injectors...
You can clean out/rebuild your own injectors and put them back on with an air compressor, good can of injector cleaner, plenum gasket and a RJM rebuild kit (total $40-$45). I'd recommend looking around on the ford fuel injecton link below...
http://fordfuelinjection.com/
RJM Injection Tech Fuel Injection Parts compatible with 89-93 Mustang 5.0L Mass Air EFI engines
You can clean out/rebuild your own injectors and put them back on with an air compressor, good can of injector cleaner, plenum gasket and a RJM rebuild kit (total $40-$45). I'd recommend looking around on the ford fuel injecton link below...
http://fordfuelinjection.com/
RJM Injection Tech Fuel Injection Parts compatible with 89-93 Mustang 5.0L Mass Air EFI engines
Thread
Thread Starter
Forum
Replies
Last Post
ABoyAndHisFord
Ford Inline Six, 200, 250, 4.9L / 300
5
Nov 16, 2004 12:05 PM
evenbogey
1987 - 1996 F150 & Larger F-Series Trucks
7
Jun 14, 2001 03:33 PM
tmcalavy
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
4
Feb 11, 2000 08:01 AM
