fuel pump relaced, now my car "hisses"
#1
Member
Thread Starter
Join Date: Jun 2009
Location: Southern Wisconsin.
Posts: 392
Likes: 0
Received 0 Likes
on
0 Posts
Car: BMW 330i ///M Sport
Engine: M54 DOHC I6
Transmission: 5 speed
Axle/Gears: Stock
fuel pump relaced, now my car "hisses"
had my pump replaced a year ago, now when i shut it off, if you stand by the car for a little bit you hear this hissing noise (kinda like a snake) that lasts for a few seconds. sometimes it does it a few times. what is going on? the only thing i cant think of is something is releasing some kind of pressure or something... idk.
#2
Senior Member
iTrader: (5)
Join Date: Dec 2006
Location: Augusta, Ga
Posts: 2,212
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 Trans Am
Engine: 355ci L98 soon to be turbo'd
Transmission: 700R4
Axle/Gears: 2.73 posi
Re: fuel pump relaced, now my car "hisses"
so its been doing this for about a year? any performance problems? What part of the car does it do it; engine bay, rear, inside? Sounds like some of the built up pressure is releasing from the gas tank. I'd check your gas cap, maybe time for new one...
#3
Member
Thread Starter
Join Date: Jun 2009
Location: Southern Wisconsin.
Posts: 392
Likes: 0
Received 0 Likes
on
0 Posts
Car: BMW 330i ///M Sport
Engine: M54 DOHC I6
Transmission: 5 speed
Axle/Gears: Stock
Re: fuel pump relaced, now my car "hisses"
no it ran a low 15 second quarter mile but every once in awhile it stalls out when you come to a fast stop. idk if it could be the gas cap, when you go to fill it up there is a ton of pressure release when you take the cap off. it sounds like its coming from the rear of the car, by the gas tank. i had a guy look at it and apparently the shop that did the fuel pump replacement really did a hack job. what could be causing that noise???
#4
Supreme Member
iTrader: (3)
Re: fuel pump relaced, now my car "hisses"
I see my 1st response didn't take-Mod-sorry if it shows later..??...
In short--I will agree w//HCR13.The tank is getting rid of over pressure or NEEDS more air in it to help w//displacement.
How long can you drive b4 problems?
I could go 30-40 mins then sputter & stall.I took off the gas cap slowly--as I did,I would hear the hiss//woosh as it came off.I haven't had any problems running w//out a cap--I need a new one.
IDK if there's a way to clean them or re-work them???
Not long ago,there was a similar thread with similar answers EXCEPT 1.
{{The reply was from vette something--sorry I don't recall the member's name but the advice is solid.}}
If you are confident the cap is good,try this:
Check all lines & hoses going into the charcoal canister for kinks,splits,tears,cracks,& being plugged,etc.
In short--I will agree w//HCR13.The tank is getting rid of over pressure or NEEDS more air in it to help w//displacement.
How long can you drive b4 problems?
I could go 30-40 mins then sputter & stall.I took off the gas cap slowly--as I did,I would hear the hiss//woosh as it came off.I haven't had any problems running w//out a cap--I need a new one.
IDK if there's a way to clean them or re-work them???
Not long ago,there was a similar thread with similar answers EXCEPT 1.
{{The reply was from vette something--sorry I don't recall the member's name but the advice is solid.}}
If you are confident the cap is good,try this:
Check all lines & hoses going into the charcoal canister for kinks,splits,tears,cracks,& being plugged,etc.
#5
Member
Thread Starter
Join Date: Jun 2009
Location: Southern Wisconsin.
Posts: 392
Likes: 0
Received 0 Likes
on
0 Posts
Car: BMW 330i ///M Sport
Engine: M54 DOHC I6
Transmission: 5 speed
Axle/Gears: Stock
Re: fuel pump relaced, now my car "hisses"
I see my 1st response didn't take-Mod-sorry if it shows later..??...
In short--I will agree w//HCR13.The tank is getting rid of over pressure or NEEDS more air in it to help w//displacement.
How long can you drive b4 problems?
I could go 30-40 mins then sputter & stall.I took off the gas cap slowly--as I did,I would hear the hiss//woosh as it came off.I haven't had any problems running w//out a cap--I need a new one.
IDK if there's a way to clean them or re-work them???
Not long ago,there was a similar thread with similar answers EXCEPT 1.
{{The reply was from vette something--sorry I don't recall the member's name but the advice is solid.}}
If you are confident the cap is good,try this:
Check all lines & hoses going into the charcoal canister for kinks,splits,tears,cracks,& being plugged,etc.
In short--I will agree w//HCR13.The tank is getting rid of over pressure or NEEDS more air in it to help w//displacement.
How long can you drive b4 problems?
I could go 30-40 mins then sputter & stall.I took off the gas cap slowly--as I did,I would hear the hiss//woosh as it came off.I haven't had any problems running w//out a cap--I need a new one.
IDK if there's a way to clean them or re-work them???
Not long ago,there was a similar thread with similar answers EXCEPT 1.
{{The reply was from vette something--sorry I don't recall the member's name but the advice is solid.}}
If you are confident the cap is good,try this:
Check all lines & hoses going into the charcoal canister for kinks,splits,tears,cracks,& being plugged,etc.
#7
Member
Thread Starter
Join Date: Jun 2009
Location: Southern Wisconsin.
Posts: 392
Likes: 0
Received 0 Likes
on
0 Posts
Car: BMW 330i ///M Sport
Engine: M54 DOHC I6
Transmission: 5 speed
Axle/Gears: Stock
Re: fuel pump relaced, now my car "hisses"
i appreciate the effort, i'll have to check all of what you said!!!
we'll see what it ends up being haha. we might have to have a thirdgenner come over and check it out
Thread
Thread Starter
Forum
Replies
Last Post
theshackle
Tech / General Engine
4
03-05-2017 06:37 PM
beachrodder
Tech / General Engine
7
08-25-2015 08:05 AM