Truck/Engine Bay Smells Like Gas - Ranger-Forums - The Ultimate Ford Ranger Resource
Ford Ranger Forum - Forums for Ford Ranger enthusiast!

Go Back   Ranger-Forums - The Ultimate Ford Ranger Resource Arrow Ranger-Forums Technical Engine Forum Arrow 2.3L & 2.5L I4 Tech Arrow SOHC - 2.3L & 2.5L Lima Engines

SOHC - 2.3L & 2.5L Lima Engines Discussions and Topics specific to the Lima 4 cylinder engines

LinkBack Thread Tools Search this Thread
Old 12-05-2015
BDod's Avatar
Thread Starter

I am: Brian
Join Date: Sep 2014
Location: Uniontown, OH
Vehicle: 2000 Ford XLT
Drive Type: 2WD
Engine: 2.5
Posts: 233
Total Props: 1
Truck/Engine Bay Smells Like Gas

Hey guys,

Many of you might know how much I put into my little truck.

Lately it smells like gas when I am stopped at a light or something, when the heat is on, or right after I park it, but never when I am moving.

It doesn't leak any obvious gas leaks at all, but it is in fact gas that I am smelling, no mistaking that smell at all.

School is done for me in the next week so I am FINALLY working out a time where my mechanic is doing my suspension and brakes and I am going to have him add this in there, but I want to be sure I am thinking in the right direction.

I am suspecting the following:

1.) Failing fuel injector.

I recently had one fail this last Feb, so maybe they are starting to all get to the point where one needs replaced? It doesn't really sputter at all like it did when I had to get injector #4 replaced. Maybe one of them is stuck open?

If an injector is stuck, the corresponding spark plug will be wet with gasoline, right?

2.) Leaking intake manifold gasket.

I had my spark plugs replaced and had the intake manifold gasket replaced to give my mechanic an easier time with it as well as replace the current intake manifold gasket for the sake of replacing it. Maybe it isn't sealing correctly or is seated wrong?

3.) Hole in exhaust manifold.

I am pretty sure I have a hold in the header. It has gotten louder on acceleration and idle and most noise is coming from the front of the cab instead of behind it. It also has lost some bottom end to it, I've noticed. I've already looked into ordering one in A condition from a yard by searching, but also believe the hole could be causing the truck to run the wrong a/f ratio and also not fully burning up the fuel.

I don't think it is a head gasket as I just had a leak down test this last Feb and everything checked out good.

The truck still runs good for the most part, just not as best as it could as I notice my mileage has decreased even further and I used to get more, even with my 33's and 4.10 gearing.

Any insight?

Last edited by BDod; 12-05-2015 at 10:48 PM.
Reply With Quote
+ 0 -
Old 12-05-2015
iTrader: (1)
I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4,739
Total Props: 88
2000 ranger will have a Returnless fuel system, 65psi of pressure.

At the end of the fuel rail there will be a Pulse damper, it will have a vacuum hose attached.
remove this vacuum hose and check it for fuel or fuel smell, if fuel is found replace damper

Also after engine is warmed up turn engine off and pop the hood.
Cycle key on and off a few times, this makes sure pressure is at 65psi.
Then see if you can locate a smell or leak in the fuel system on the engine.

Also check in the frame rail under drivers seat area, that's where the fuel filter, is located it's connectors can leak

You generally won't smell fuel from a stuck open injector, as the intake manifold is sealed up pretty tight.
Simple test for open injector is to use Clear Flooded Engine routine found in all fuel injection computers.

Turn on the key
Press gas pedal to the floor and hold it down all the way
Try to start engine, it should not start or even fire a little, fuel injectors are shut off.

With key on, engine off and gas pedal to the floor the computer "sees" 5volts from TPS,(throttle position sensor), this tells computer to enter Clear Flooded Engine mode.
So it won't open fuel injectors until foot is taken off gas pedal.
As soon as gas pedal comes up even a little injectors will start up.

So if engine tries to start in above test then fuel is leaking into the engine.

Last edited by RonD; 12-05-2015 at 11:42 PM.
Reply With Quote
+ 0 -
Old 03-12-2016
BDod's Avatar
Thread Starter

I am: Brian
Join Date: Sep 2014
Location: Uniontown, OH
Vehicle: 2000 Ford XLT
Drive Type: 2WD
Engine: 2.5
Posts: 233
Total Props: 1
It actually ended up being a leaking fuel injector that was "stuck" open. The o-ring was cracked near the sprayer tip.

Last edited by BDod; 03-13-2016 at 10:48 AM.
Reply With Quote
+ 0 -

Similar Threads
Thread Thread Starter Forum Replies Last Post
Truck is making no power, and smells like gas Jeffjimmy 4.0L OHV & SOHC V6 Tech 9 02-21-2014 08:28 AM
Ranger in Danger Stalling, Flickering Oil Guage, Smells lil.ranger General Technical & Electrical 0 06-01-2011 04:36 PM
A/C smells like mildew ? Help Please psylo535 General Technical & Electrical 10 07-25-2009 12:42 PM
smells like gas? 974.0L 4.0L OHV & SOHC V6 Tech 6 11-01-2006 04:13 AM
Best way to clean engine bay? 02fx4 General Ford Ranger Discussion 22 09-10-2006 07:23 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -6. The time now is 01:05 AM.