Spitting and Sputtering on Start up

[baldheadfred1]

Our first generation 1994 Explorer spits and sputters out of the gas pipe, when we start it. And when it gets warm, it seems to straighten out.

Does anyone have any idea what may be causing this? It is getting extremely frustrating. Any help would be appreciated!

TIA

 

[92exp4x4]

What do you mean by the "gas pipe"? Do you mean the exhaust or the fuel tank filler? Is it miss firing, running rough at idle or under acceleration?


When was the last tune up? What was done? Is the engine light on?

A little more info and I think we can get you started in the right direction.

 

[MrShorty]

I'd probably start with some basic diagnostics. Pull codes (whether the CEL is on or not. See the stickies in the EEC-IV forum) and check fuel pressure at start up.

 

[mgmgmg]

I have the same problem? Pulled no codes maf cleaned did a tune up etc. no vaccum leaks. would a egr cause this problem?

 

[baldheadfred1]

I checked the fuel pressure, it is carrying about 33 lbs, after changing the FPR. It still spits and sputters when cold out the exhaust pipe. It goes away after driving it for a little bit, however it still misses, the same way.