poor running 92 sport

[88vert]

Last week my x starting running a little rough,so i cleaned the mas,put new plugs and new wires,helped a little bit for about another few days,then all of a sudden on start up,its getting real hard to start and when it does start it rough idles real bad then smoothes out somewhat,getting real bad smell like raw gas,so i changed o2sensor,now when i drive i am getting a check engine light flickering off and on.Come on guys I need some help here.Thanks Brad in Iowa

 

[Stephen S]

All those repairs you've already performed sound like good fixes for a rough idling engine. But did you reset the engine's computer after changing the parts?? Especially after cleaning the MAS and changing the O2 sensors, you should reset the computer and see if it helps. Just disconnect your battery for about a half hour or so and it will reset the computer, causing it to "forget" all the old stored problem codes that were there before the repairs were done. Now, there may still be something else wrong with the truck, but it might be as simple as resetting the computer. It's worth a shot! Good luck and let us know what happens!

 

[mdrut]

Raw fuel, Sounds like a stuck Fuel Pressure Regulator...On the end of the Fuel Rail..front left,looking at the engine, you will see a round, diaphrame looking thing, 2 lines going to it,1 steel, 1 plastic...Carefully remove the plastic line and check for fuel..If any moisture is in the line, replace the regulator.

 

[88vert]

fuel pressure regulator

I took the plastic line which looks like a vacume line off and there is gas dripping out,is this normal?I reset the computer last night after doing all the work and it still runs like crap.where would i get a fuel pressure regulator at?Autozone western auto,carquest,napa?Thanks for help guys we are getting there slow but sure I have faith.Thanks Brad in Iowa

 

[mdrut]

That was the fuel pressure reg that the line came off of..It is blown if there is fuel in the line.. There are 2 types, screw on line and snap line, you probally have the screw on type.. Figure about 65 tops at autozone..Depending on how long this has been going on, you might want to do an oil change.
Procedure is simple..
Start vehicle, pull the fuel pump fuse, allow engine to "Die"..
Remove plastic line..
remove fuel line..
remove the 2 bolts that hold it in...
carefully remove the old regulator..
There may still be pressure in the fuel rail, so wear eye protection...
install new regulator in reverse order...
Good luck..

 

[88vert]

fuel pressure reg

I called autozone they said 64 dollars,boy you are good.They said there truck will not be untill about 4.I will e-mail you back with the results later today

 

[88vert]

Thanks alot mdrut i changed the fuel pressure regulator and my vehicle runs like a new truck,starts on first turn of key.thanks alot for all your help,I knew you guys could do it.Thanks again Brad in Iowa