MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-20-12 01:43 PM - Post#2227931
Since completion of my '55 Nomad, I have had re-ocurring issue of exhaust fumes in the cabin. Entire exhaust system has been checked, no leaks. Have re-positioned twin pipes to exit diagonally at corner of rear bumper, instead of straight back near bumperettes. Have installed additional weather stripping on tailgate. Still getting fumes in cabin. Anyone have any ideas/experience with this issue? Thanks!
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 swbatt
West Coast Show Support
Posts: 4151
Reg: 03-25-01
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05-20-12 06:15 PM - Post#2228017
In response to MadMonty
Have you got the piece between the rear bumper and the lower rear body?
"Which do I prefer? Chess or sex? It depends on the position." - Spassky |
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MadMooks
Thread Sponsor
Posts: 1878
Loc: California
Reg: 05-07-01
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05-20-12 10:25 PM - Post#2228063
In response to swbatt
has your liftgate been straightened? if it hasnt and needs straightening it might not be sealing properly. this is just my guess. the rear lifgate and tailgate never seal properly, and a liftgate that still has a twist definitely doesnt help. if you need more info on this, email me directly at michaelbakotich@ca.rr.com any pictures of your liftgate would help me assess it.
Edited by MadMooks on 05-20-12 10:28 PM. Reason for edit: No reason given.
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tewitt1949
Contributor
Posts: 255
Reg: 10-17-09
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05-21-12 03:48 AM - Post#2228105
In response to MadMonty
I just got mine on the road and have driven about 400 miles. My tail pipes exit at the very rear corners of the bumper and point downward and outward a little.. I do have the tail pan seal and my lift gate was straightened by madmooks. So far no gases inside the car. Not sure what attribitued to my my clean air inside, maybe all above helped.
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-21-12 04:07 PM - Post#2228354
In response to swbatt
That's a good question, I dunno! I did not do the build, my best friend did (yes, we are still best friends!). Could you say a bit more about what piece you are referring to, and I will check it out. Thanks so much for your help!
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-21-12 04:10 PM - Post#2228357
In response to MadMooks
I had my liftgate straightened by Jerry C. In California. Crated it up and shipped it out. I have had one person mention that the liftgate still looked a bit "tweaked" when I was at the CNA convention last year, so maybe it still needs work, as Jerry could not see it reinstalled on the car. Thansk for your help!
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-21-12 04:12 PM - Post#2228358
In response to tewitt1949
Glad you have a "clean ride"! Ha! I will check out the tail pan seal! Thank for your input!
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-21-12 06:07 PM - Post#2228396
In response to MadMonty
SWbatt, this looks like the seal you mentioned, right?
55 Body to Bumper Seal Return to Products...
Item Number: 10167
Item Name: 55 Body to Bumper Seal
Item Price: $24.00
Item Description: This seal mounts on the rear pan between the body and bumper to seal out dust and dirt. Priced each.
For the following: 1955, Bel Air, 210, 150, Hard top, Sedan, Sedan Delivery, Station Wagon, Nomad, Convertible, 2 door, 4 door, 6 Cyl., V8
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Henrys57wagon
Valued Contributor
Posts: 3182
Age: 71
Loc: Ontario
Reg: 04-15-06
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05-22-12 06:45 AM - Post#2228578
In response to Nomad Jack
I did not install a seal at the rear bumper either and no exhaust smell. My exhaust exits just before the bumper, good day.
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cnbell
Deceased
Posts: 9224
Loc: So Cal
Reg: 04-14-04
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05-22-12 09:45 AM - Post#2228625
In response to Henrys57wagon
The lower pan seal is a dust seal to prevent dirt from blowing up on the back of the car and back window, I don't think it would do much for exhaust fumes.
I would guess it's getting in either through the back gate or window or possibly from under the car. Any open holes in the spare tire well ?
Check for leaks at the mufflers and joint welds.
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-22-12 02:39 PM - Post#2228719
In response to MadMonty
Finally got a chance t look and I do not have the tail pan seal! Will proced to order and hope this helps. Thanks again!
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-22-12 02:42 PM - Post#2228720
In response to cnbell
Thanks for the suggestions, have checked all of that-just had a new exhausr syestem put on from the headers back-tight as can be. No holes in the floors or spare tire compartment.It is coming from somewhere and by process of elimination by gosh we will pinpoint it. Thank you!
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-22-12 02:59 PM - Post#2228725
In response to Nomad Jack
Thanks Nomad Jack! My twin pipes used to exit right where your's do, but stuck out about an inch or so past the bumper. In the middle of my trip I was so frustrated with fumes (after completely taping off the tailgate and liftgate!) I pulled into a custom exhaust shop and ended up having everything re-done from the headers back, and re-positioned the exhaust tips to exit diagonally at the very corner of each bumper, thinking that would shoot the fumes out back and to the side. Still getting fumes! I do need to double check for leaks where the headers connect to the manifold. Thanks for your input and glad you have a "clean ride"!
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cdmhenry
Very Senior Member
Posts: 2405
Loc: Minden, NV.
Reg: 09-14-00
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05-22-12 07:29 PM - Post#2228817
In response to MadMonty
It's exhausting....
Go to a good exhaust shop and have them pressurize your exhaust with a smoke machine. You'll find the exhaust leak immediately.
If tht's not the problem you could be piping exhaust into the quarter panel cavity. There are few openings there, but enough to be worth checking into.
Lastly, why is your exhaust so evil? What about a tune up? I was able to survive my leaking liftgate and lost exhaust extension for several hundred miles. I could smell it and knew i would have to fix it, but it would not have made me stop at an exhaust shop.
OK. Not quite lastly... Check your headers for leaks between the primaries near the collectors.
| Every Government Interference In The Economy Consists Of Giving Unearned Benefit, Extorted By Force, To Some People At The Expense Of Others - Ayn Rand |
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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05-23-12 09:32 AM - Post#2228980
In response to cdmhenry
Thanks for your suggestions cdmHenry! Especially preasurizing the system with smoke-as for the tune-up,it is carbureated, and I do think it is running a bit rich judging from the blackened tail pies-good point. I will follow up on each of your sugestions-thanks!
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Nomad Jack
Senior Member
Posts: 809
Loc: Cape Cod, Ma.
Reg: 03-14-03
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05-30-12 03:42 AM - Post#2231392
In response to MadMonty
I was getting the Nomad out of winter storage, cleaning her up and getting my inspection sticker last Friday. In detailing the engine I had unplugged some sensors and the injectors so I could better clean and polish. When done, went for a ride and got the inspection sticker, then I went and picked up the wife and we headed out for lunch, and she commented that it smelled and she was correct. When I went to start up the Nomad, it started real rough and the idle speed was faster then normal. I was thinking it the gas went bad sitting over the winter, and by the time we got home, it really did have a strong smell. Ended up being the H2O sensor wasn’t connected so the computer didn’t now how hot the engine was and I guess was richening up the mixture. As soon as it was reconnected, the idle speed dropped and the smell went away. The point of this long tail, the suggestion to check the engine tune is a good one. 
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MadMonty
Member
Posts: 24
Loc: Virginia
Reg: 04-12-03
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06-10-12 02:57 PM - Post#2235521
In response to Nomad Jack
Thanks Nomad Jack-as per an earlier suggestion, I appear to be running pretty rich.
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johnminton
Newbie
Posts: 12
Reg: 04-11-18
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04-15-18 01:37 PM - Post#2731066
In response to MadMonty
Old trick. Run the heater blower and draw outside air source (Windows up). This pressurizes the cabin. If the source is from outside the smell will go away.
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vabeach56wagon
Valued Contributor
Posts: 3144
Loc: Chesapeake,VA,
Reg: 04-22-02
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11-15-18 10:16 AM - Post#2751479
In response to MadMonty
I ran the rear tips out to the edge of the quarter panel, with an angle cut parallel to the sheet metal. Even with the liftgate open, we never had any exhaust smell or fumes in the cabin.
paul
Original builder of the Gobstomper - '56 210 9 passenger wagon now in other's hands. Current Ride is '69 X33D80 Z28 Camaro
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Original Madman
Poster
Posts: 31
Age: 68
Loc: Beaverton Or.
Reg: 06-27-15
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10-05-19 08:30 AM - Post#2777130
In response to vabeach56wagon
There are other ways for fumes get inside. If I remember correctly, there should be a rubber seal around the tail gate cables just rearward of the extractor. And also you may have small leaks in the seal around the rear inner fender to the outer fender. These are hard to replace but if they are not all broken up you may be able to use a spray sealer from the inside of the quarter panel area that is next to the rear seat. Hope this helps.
Dave W.
| Second Generation Original Owner |
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