smelling gas

90 notch · August 27th, 2011, 03:23 PM

soo I jus bought a chilton manual and it sucks. Diagrams only and it dsnt show where the tb or intake is in anything. I've found 2 vacuum lines that don't go anywhere. One is from the back of the intake and directs toward the egr. I smell eye peeling gas being burned. I know the egr has some issues which is why it idles as tho I have a cam. I have after market headers exhaust and deleted the air pump. Help?

fogged306 · August 27th, 2011, 03:49 PM

Whenever you have excessive fuel being dumped, it will make the idle more choppy. I can take my car from a smooth stock-like idle, to a choppy idle with just tuning the amount of fuel being added at idle. I would start with checking your fuel pressure and then if everything looks ok, checking for codes next. Do you still have stock injectors and a stock MAF?

00MustangGtPremium · August 27th, 2011, 05:26 PM

Vacuum leaks can also make a car seem like its cammed

1988 convertible · August 28th, 2011, 03:54 AM

if you got rid of the pump did you block off the holes on the headers? that may be one reason why you can smell the gas too??
have a quick check under the rear of the manifold there is a small vaccume tree feel around and make sure there are pipes connected to all the little spouts underneath...

these may help if you can follow the diagrams :
http://www.veryuseful.com/mustang/te...uumDiagram.jpg
http://www.veryuseful.com/mustang/te...g5.0Vacuum.gif

90 notch · August 28th, 2011, 08:02 PM

I plugged everything off yea. And the codes seem ok. It has stock maf and I think injectors. But I noticed the injectors are yellow tops. Aren't those 24 pound? If so maybe it's too much for stock intake and such.

90 notch · August 28th, 2011, 08:03 PM

btw I noticed the smell when I ran 90 octane with fuel injector cleaner. I have yet to change the fuel filter.

fogged306 · August 28th, 2011, 08:07 PM

Are you smelling the gas though the exhaust or is it coming from the engine bay?

Yellow tops are 19# just like the factory orange ones that came on these cars.

90 notch · August 29th, 2011, 01:23 PM

ok cool. I'm smelling it between the motor and firewall but out of the exhaust itself is 10xs worse. Eye peeling strong

90 notch · September 2nd, 2011, 01:53 PM

I hvnt changed my fuel filter since the last fuel injecto cleaner. Also I have been using 90 octne fuel. Could any of these contribute to the problem?

fogged306 · September 2nd, 2011, 05:06 PM

The 90 octane isn't going to do that. The fuel injector cleaner may be the culprit though. It may have removed some deposits on the fuel line or injector itself and moved them into the moving parts of the injector and caused it to stick open. I would pull the plugs one by one and see if any look wet with gas or fouled out. If you find some like that, then the injector for that cylinder is probably gummed up.

50Droptop · September 2nd, 2011, 08:55 PM

Id clean your maf sensor.. if its dirty or has oil on the sensors from a oiled air fliter like a K&N it can cause it to run rich. If you deleted the charcole canister and left the vent line hanging it will send fumes out too.

CHeck your fuel press as well.
If you deleted the air pump did you cap off the line going to the h pipe?

90 notch · September 4th, 2011, 11:18 AM

I capped off the lins from the ir pump. I did oil the filter not too long go so I'll check the maf nd replace the fuel filter. Then hen I get extra time I'll pull out fuel injectors. I also need a fuel pressure gauge..shoulda kept the one off my t/a :/

50Droptop · September 4th, 2011, 11:26 AM

Sounds like a good place to start. Let us know if it helps.

90 notch · September 5th, 2011, 08:22 PM

well the fuel filter was dirty but it wasn't the prob. I'll try the vacuum lines next with the maf tomorrow and let you kno.

95Slobra · September 6th, 2011, 03:08 PM

jus a pointer as well. our cars seem to have a problem with the gasket that goes from the gas tank to the neck. one day when i filled up i woke up the next morning and smelled gas in my bedroom!! the gasket was bad and its normal supposly. just a heads up if u smell gas and your engine bay is fine

August 27th, 2011, 03:23 PM	#1
90 notch Regular Join Date: Apr 2011 Posts: 51 iTrader: 1 reviews	smelling gas soo I jus bought a chilton manual and it sucks. Diagrams only and it dsnt show where the tb or intake is in anything. I've found 2 vacuum lines that don't go anywhere. One is from the back of the intake and directs toward the egr. I smell eye peeling gas being burned. I know the egr has some issues which is why it idles as tho I have a cam. I have after market headers exhaust and deleted the air pump. Help?

August 27th, 2011, 05:26 PM	#3
00MustangGtPremium Regular 2000 Mustang Gt no clue Join Date: Mar 2011 Location: Naples, Fl Posts: 349 Blog Entries: 3 iTrader: 0 reviews	Vacuum leaks can also make a car seem like its cammed __________________ Just because your cars loud doesnt mean its fast

September 2nd, 2011, 08:55 PM	#11
50Droptop Regular 87 Mustang Lx 13.76@100 Join Date: Aug 2011 Location: Indiana Posts: 124 iTrader: 0 reviews	Id clean your maf sensor.. if its dirty or has oil on the sensors from a oiled air fliter like a K&N it can cause it to run rich. If you deleted the charcole canister and left the vent line hanging it will send fumes out too. CHeck your fuel press as well. If you deleted the air pump did you cap off the line going to the h pipe? __________________ Shawn 87 Coupe The Notch

September 4th, 2011, 11:26 AM	#13
50Droptop Regular 87 Mustang Lx 13.76@100 Join Date: Aug 2011 Location: Indiana Posts: 124 iTrader: 0 reviews	Sounds like a good place to start. Let us know if it helps. __________________ Shawn 87 Coupe The Notch

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August 27th, 2011, 03:49 PM	#2
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Whenever you have excessive fuel being dumped, it will make the idle more choppy. I can take my car from a smooth stock-like idle, to a choppy idle with just tuning the amount of fuel being added at idle. I would start with checking your fuel pressure and then if everything looks ok, checking for codes next. Do you still have stock injectors and a stock MAF?

August 28th, 2011, 03:54 AM	#4
1988 convertible Regular 1988 Join Date: Jun 2007 Location: London Posts: 215 iTrader: 0 reviews	if you got rid of the pump did you block off the holes on the headers? that may be one reason why you can smell the gas too?? have a quick check under the rear of the manifold there is a small vaccume tree feel around and make sure there are pipes connected to all the little spouts underneath... these may help if you can follow the diagrams : http://www.veryuseful.com/mustang/te...uumDiagram.jpg http://www.veryuseful.com/mustang/te...g5.0Vacuum.gif

August 28th, 2011, 08:02 PM	#5
90 notch Regular Join Date: Apr 2011 Posts: 51 iTrader: 1 reviews	I plugged everything off yea. And the codes seem ok. It has stock maf and I think injectors. But I noticed the injectors are yellow tops. Aren't those 24 pound? If so maybe it's too much for stock intake and such.

August 28th, 2011, 08:03 PM	#6
90 notch Regular Join Date: Apr 2011 Posts: 51 iTrader: 1 reviews	btw I noticed the smell when I ran 90 octane with fuel injector cleaner. I have yet to change the fuel filter.

August 28th, 2011, 08:07 PM	#7
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Are you smelling the gas though the exhaust or is it coming from the engine bay? Yellow tops are 19# just like the factory orange ones that came on these cars.

August 29th, 2011, 01:23 PM	#8
90 notch Regular Join Date: Apr 2011 Posts: 51 iTrader: 1 reviews	ok cool. I'm smelling it between the motor and firewall but out of the exhaust itself is 10xs worse. Eye peeling strong

September 2nd, 2011, 01:53 PM	#9
90 notch Regular Join Date: Apr 2011 Posts: 51 iTrader: 1 reviews	I hvnt changed my fuel filter since the last fuel injecto cleaner. Also I have been using 90 octne fuel. Could any of these contribute to the problem?

September 2nd, 2011, 05:06 PM	#10
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	The 90 octane isn't going to do that. The fuel injector cleaner may be the culprit though. It may have removed some deposits on the fuel line or injector itself and moved them into the moving parts of the injector and caused it to stick open. I would pull the plugs one by one and see if any look wet with gas or fouled out. If you find some like that, then the injector for that cylinder is probably gummed up.

September 4th, 2011, 11:18 AM	#12
90 notch Regular Join Date: Apr 2011 Posts: 51 iTrader: 1 reviews	I capped off the lins from the ir pump. I did oil the filter not too long go so I'll check the maf nd replace the fuel filter. Then hen I get extra time I'll pull out fuel injectors. I also need a fuel pressure gauge..shoulda kept the one off my t/a :/

September 5th, 2011, 08:22 PM	#14
90 notch Regular Join Date: Apr 2011 Posts: 51 iTrader: 1 reviews	well the fuel filter was dirty but it wasn't the prob. I'll try the vacuum lines next with the maf tomorrow and let you kno.

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September 6th, 2011, 03:08 PM	#15
95Slobra Regular 1995 Mustang Gt Join Date: Sep 2011 Location: raleigh Posts: 218 iTrader: 0 reviews	jus a pointer as well. our cars seem to have a problem with the gasket that goes from the gas tank to the neck. one day when i filled up i woke up the next morning and smelled gas in my bedroom!! the gasket was bad and its normal supposly. just a heads up if u smell gas and your engine bay is fine