PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > General Forums > General PT Cruiser Discussions

PT Cruiser Forum

Advertisements
Handy Needs Help: Gasoline Odor - Sometimes

 
Like Tree14Likes
  • 1 Post By Handy_Cruiser
  • 3 Post By NitroPT
  • 1 Post By NitroPT
  • 2 Post By VNT
  • 4 Post By Handy_Cruiser
  • 2 Post By Fk5
  • 1 Post By wingman55

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 04 Sep 2017, 11:51 am
Handy_Cruiser's Avatar
Obsessed Cruiser
 
Join Date: Oct 2013
Location: Arkansas
Posts: 10,551
Wink Handy Needs Help: Gasoline Odor - Sometimes

A couple of months ago, I was putting along in my PT. I stopped at a stop sign and then sped away. But when I took off, I caught a whiff of raw gasoline. Afterwards, I've notice this both after stops and when making slow turns such as turning left or right off of a city street. It seems to be coming from beneath the hood. Upon examining the engine and fuel system very closely, I cannot find any indication of a fuel leak either in the supply fuel line, fuel rail or injector connections to the fuel rail.

My first attempt at a fix was to replace the fuel supply line. These can get "crispy" on the turbo PT's and the o-rings on the quick-connects can get old and let fuel leak. While I first thought this fixed the issue, I noticed that it was still there after driving the car a bit more.

On other cars, I've had these supply lines and the injector o-rings leak. And often if the leak is very small, there's just an odor but no sign of liquid fuel which would evaporate very quickly. So they can be hard to find. And on the PT Cruiser, I have found no other places under the hood where fuel is likely to leak from. No visible leaks found with the engine running nor even with the engine cold and the fuel pump on.

So I'm throwing it up to the forum for ideas before I pull the fuel rail and replace the o-rings when the injectors connect to the fuel rail. What do you think? Are there other likely things that could product this slight periodic fuel odor?

PS: It should be noted that the fuel rail has likely been removed from the engine before when the head was rebuilt after a blown head gasket. It's unknown if the injector o-rings where changed at that time.
Carnut likes this.
__________________

Last edited by Handy_Cruiser; 04 Sep 2017 at 11:57 am.
Reply With Quote
  #2 (permalink)  
Old 04 Sep 2017, 12:13 pm
NitroPT's Avatar
Obsessed Cruiser
 
Join Date: Jun 2012
Location: USA kalyfornia
Posts: 16,000
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

Suggestion: With an assistant the next time you smell fuel have them or you quickly go to the rear of the PT where the fuel tank and other fuel vapor components are. Noise like smells can be deceiving where they are actually coming from.
__________________
To view larger pictures simply "click " on the picture!

Dalai Lama
"Share you knowledge. It's the best way to achieve immortality."
ASE MASTER TECHNICIAN
Reply With Quote
  #3 (permalink)  
Old 04 Sep 2017, 12:46 pm
Handy_Cruiser's Avatar
Obsessed Cruiser
 
Join Date: Oct 2013
Location: Arkansas
Posts: 10,551
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

Quote:
Originally Posted by NitroPT View Post
Suggestion: With an assistant the next time you smell fuel have them or you quickly go to the rear of the PT where the fuel tank and other fuel vapor components are. Noise like smells can be deceiving where they are actually coming from.
If it was coming from the rear of the car, what would you suspect as the problem? No codes and clean as a whistle underneath.
__________________
Reply With Quote
  #4 (permalink)  
Old 04 Sep 2017, 01:04 pm
NitroPT's Avatar
Obsessed Cruiser
 
Join Date: Jun 2012
Location: USA kalyfornia
Posts: 16,000
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

Quote:
Originally Posted by Handy_Cruiser View Post
If it was coming from the rear of the car, what would you suspect as the problem? No codes and clean as a whistle underneath.
I am not sure if there are still pictures of my tank I use for reference(?), there are several possibilities that may be venting fums and NOT activating a DTC?

That is why I just suggested to get out the Arkansas COON HOUND noses and see what you can sniff out back there?

I have had this come up on my own PT and one other. Mine was I just topped off when we were traveling which was simple I stopped topping the fuel ever again and so did the smell. The other was one of the hoses attached to the Natural Vacuum Leak Detection (I had to look up the technical and proper name)that was damaged when my friend changed his fuel pump.
Handy_Cruiser likes this.
__________________
To view larger pictures simply "click " on the picture!

Dalai Lama
"Share you knowledge. It's the best way to achieve immortality."
ASE MASTER TECHNICIAN
Reply With Quote
  #5 (permalink)  
Old 05 Sep 2017, 07:36 pm
VNT's Avatar
VNT VNT is offline
Senior Cruiser
 
Join Date: Jun 2009
Location: NE
Posts: 1,468
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

If you havent done the injector o-rings, I would replace them.

I had a fuel smell on my 2.5 turbo in my Shadow, It had about 150k at the time, I gambled on the o-rings and it fixed it. they also had a fuel pressure regulator and that was the 2nd item I would have replaced if the o-rings didnt fix it.

I would assume fuel vapor odors could come from the rear tank area and the leak detection pump under passenger rear if any of rubber hoses are dried out or cracked.
Handy_Cruiser and myckee like this.
__________________
VNT

86 TurboZ CS 2.2 T2 +20's A555
00 Durango SLT+ 5.9 4x4
02 Grand Cherokee 4.7 4x4
03 PT GT Black 5 sp Stg 1 sold
05 PT GT Silver 5 Spd Conv
06 PT GT Cool Vanilla 5 spd Conv
06 PT Base Marine Blue 40TE Conv
15 Grand Cherokee Overland 5.7 QD2
17 Challenger SRT A8 GoMango
18 JL Wrangler Sahara Punkn
20 JL Wrangler Rubicon Ocean Blue
Reply With Quote
  #6 (permalink)  
Old 06 Sep 2017, 09:28 am
Handy_Cruiser's Avatar
Obsessed Cruiser
 
Join Date: Oct 2013
Location: Arkansas
Posts: 10,551
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

Quote:
Originally Posted by VNT View Post
If you havent done the injector o-rings, I would replace them.

I had a fuel smell on my 2.5 turbo in my Shadow, It had about 150k at the time, I gambled on the o-rings and it fixed it. they also had a fuel pressure regulator and that was the 2nd item I would have replaced if the o-rings didnt fix it.

I would assume fuel vapor odors could come from the rear tank area and the leak detection pump under passenger rear if any of rubber hoses are dried out or cracked.
Yep. After having no joy while inspecting the visible lines and such, I'll likely just go ahead and do the injector o-rings. I may install a 2001 chrome fuel rail w/schrader valve at the same time if it is fundamentally the same as the 2007 turbo engine rail. I will need to grab a good one at the salvage yard for comparison. And if that doesn't do it, I figure I'll end up dropping the tank.

PS: My issue is always how far to go when I dig into something like this. While I have the upper intake manifold off, I might as well do plugs and wires. And while I'm at it, I might as well remove, paint and detail the valve cover. And of course, I'll want to replace all the gaskets so I need a head set which is cheaper than just buying the gaskets individually. And while the valve cover is off, I could install performance camshafts and cam seals since I found it's possible to do this without removing the timing belt. And let's not forget new blue Goodyear radiator hoses. The list goes on and on. And of course, I could then end up with a very pretty engine and still have the gas odor if new o-rings don't do the trick. Being me is often more than a full time job.
__________________

Last edited by Handy_Cruiser; 06 Sep 2017 at 09:38 am.
Reply With Quote
  #7 (permalink)  
Old 06 Sep 2017, 09:42 am
rckstein's Avatar
Banned
 
Join Date: Dec 2010
Location: Texas
Posts: 15,518
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

Sounds like time for a newer, different PT
Reply With Quote
  #8 (permalink)  
Old 06 Sep 2017, 09:49 am
Fk5 Fk5 is offline
Senior Cruiser
 
Join Date: Jul 2011
Location: Colesville, MD
Posts: 1,882
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

FWIW, I was getting that kind of smell at times when my intake gasket was blown out. I guess some raw fuel or vapor was making it through the leak.
__________________
2003 GT 5 speed
162,000 miles

Last edited by Fk5; 06 Sep 2017 at 11:41 am.
Reply With Quote
  #9 (permalink)  
Old 06 Sep 2017, 12:44 pm
NitroPT's Avatar
Obsessed Cruiser
 
Join Date: Jun 2012
Location: USA kalyfornia
Posts: 16,000
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

It really is a better idea to solve the first problem before taking other things apart and replacing things which may cause more then the original problem.

I might also try to use a low air pressure and pressurize(carefully using low air pressure) the fuel tank to see if you can cause a gasoline smell to follow?
You can also carefully do this while the engine is idling. You may need to disconnect and cap various hoses during this test to narrow the possible atmosphere leak.

The injector o-ring inspection is a good idea but most of the time there is a residue left from any vapor or fuel leaks that can be seen.
__________________
To view larger pictures simply "click " on the picture!

Dalai Lama
"Share you knowledge. It's the best way to achieve immortality."
ASE MASTER TECHNICIAN
Reply With Quote
  #10 (permalink)  
Old 06 Sep 2017, 09:29 pm
wingman55's Avatar
Senior Cruiser
 
Join Date: Aug 2015
Location: Pennellville, NY
Posts: 1,616
Default Re: Handy Needs Help: Gasoline Odor - Sometimes

Quote:
Originally Posted by Handy_Cruiser View Post
If it was coming from the rear of the car, what would you suspect as the problem? No codes and clean as a whistle underneath.
I had trouble with my full-size Dodge van like that. Is there abnormal pressure in the tank when you open the cap to fill it? We had a plugged (more likely it was bent when they put a new fuel pump in after the original died) fuel line and it would build up a lot of pressure. Especially on hot days you could smell gas. And it was difficult to tell where it was coming from.

Once the new fuel pump died (!) they solved the 'problem' when they put in ANOTHER fuel pump. (It was one month out of warranty but they replaced it for free, even though they gave me a hard time initially. It was a local Dodge Dealer who did the work - so I won't complain. I'm guessing that they discovered the fuel line problem so they didn't charge me.)

It was also surprising how much more power it had with the second new pump.

Handy_Cruiser likes this.
__________________
2006 Limited Edition, Inferno Red, 5-speed, Bassani dual exhaust, Chrome backup light bezels, taillight trim, fuel door, antenna mount, Ventiports, door spear covers & hood prop. Silver painted lower front grille. American Racing 383 Casino wheels, w/Chrysler emblems, '02 engine cover, PT Cruiser mudguards, cargo mat. EGR Window Visors, dark gray lock pulls, dual horns, Fuzzy Dice, flames and MOPAR emblems added to front door logos, gold Chrysler emblem on rear hatch. Upgraded to RAK radio with 6 CD changer, Cassette Tape and RDS info. Name: "FIREBALL" I bought it Aug 10, 2015, with just over 35,600 miles on it.

2004 Limited Edition Platinum Series, Graphite Metallic, Standard Turbo, automatic, RBQ radio with Sirius Radio & 6 CD changer, VentShades, chrome exhaust tip, door spears, grille inserts, door lock pulls, bright pedals and steering wheel spokes. Red spoiler from a donor PT. Known as: "The RATMOBILE" I bought it Apr 28th, 2016 with 62,400 miles on it.

Last edited by wingman55; 06 Sep 2017 at 09:33 pm.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Exhaust odor in the cabin rhino169 General PT Cruiser Discussions 12 21 Feb 2015 11:29 am
A foul & mysterious odor.. PawsToDream Tech & Performance Forum 11 07 Jun 2014 01:26 pm
Overheating/Screeching/Odor Haha_No Tech & Performance Forum 5 21 Apr 2011 12:39 am
Gas odor from air vents! InTheBeginning General PT Cruiser Discussions 1 12 Jan 2010 11:52 am
Odor from Vent TXWolf General PT Cruiser Discussions 25 03 Oct 2002 12:21 pm


All times are GMT -5. The time now is 01:30 pm.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors