|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
12-13-2016, 01:22 PM | #1 |
Junior Member
Join Date: Dec 2016
Location: Selah, Washington
Posts: 3
|
Vibration gas tank
THE BAFFLES IN THE GAS TANK ON MY 29 MODEL ROADSTER ARE LOOSE.
THEY RATTLE AND VIBRATE AT CERTAIN rpm AND SPEED. IS THERE ANYWAY TO FIX THIS PROBLEM WITH CUTTING THE TANK OPEN? THANKS WILLY. |
12-13-2016, 01:40 PM | #2 |
Senior Member
Join Date: May 2010
Location: Central, IL
Posts: 3,968
|
Re: Vibration gas tank
are you 100% sure without a doubt thats it? sure its not the choke rod buzzing or instrument panel vibrating or spedo cable rubbing on the tank?
__________________
1929 Model AA - Need long splash aprons! |
Sponsored Links (Register now to hide all advertisements) |
|
12-13-2016, 04:49 PM | #3 |
Junior Member
Join Date: Dec 2016
Location: Selah, Washington
Posts: 3
|
Re: Vibration gas tank
I'm 95% sure it is the baffles, but I never checked the speedo cable. Thanks for the suggestion. Starting out, it will start vibrating and quit when I get to 30 MPH. I'll chek out the cable.
|
12-13-2016, 05:33 PM | #4 |
Senior Member
Join Date: Jul 2011
Location: Southwestern Connecticut
Posts: 931
|
Re: Vibration gas tank
I had a similar rattle that was driving me crazy. I was convinced it was in the tank. It turns out it was the ears on the radiator where the support rods connect. The rods would then shake and transfer that vibration to the firewall near the gas tank and that is where I heard the buzz.
__________________
Style beats speed any day, and with a lot fewer tickets. |
12-13-2016, 07:19 PM | #5 | |
Senior Member
Join Date: May 2010
Location: Central, IL
Posts: 3,968
|
Re: Vibration gas tank
Quote:
Ive heard brake return springs/antirattlers make a hell of a noise if they are a hair loose on the rods. also make sure your throttle linkage isnt rubbing the lower firewall or your hood sides arent buzzing against the cowl. Also pay attention to the fuel level - could be your float /float rod rubbing something does it only buzz when your moving or is it a certian RPM you can move the throttle lever down in neutral and start pushing or pulling things to pinpoint the sound?
__________________
1929 Model AA - Need long splash aprons! |
|
12-13-2016, 07:26 PM | #6 |
Senior Member
Join Date: Sep 2012
Location: Muscatine, IA
Posts: 223
|
Re: Vibration gas tank
Sponsored Links (Register now to hide all advertisements)
|
12-13-2016, 07:45 PM | #7 |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 3,131
|
Re: Vibration gas tank
If you have a brass gas gauge float installed it could be rattling against the inside of the tank.
Tom Endy |
12-13-2016, 09:38 PM | #8 |
Senior Member
Join Date: Jul 2011
Location: Southwestern Connecticut
Posts: 931
|
Re: Vibration gas tank
I ultimately found that problem with my radiator by walking all around the car and thumping on everything I could think of with the heel of my hand. It took quite a while, but eventually the thump returned a rattle and I traced it down.
__________________
Style beats speed any day, and with a lot fewer tickets. |
12-14-2016, 09:51 AM | #9 |
Senior Member
Join Date: Sep 2012
Location: New Jersey shore
Posts: 257
|
Re: Vibration gas tank
Excellent diagnostic procedure KGBnut
|
12-14-2016, 11:02 AM | #10 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Vibration gas tank
RATTLES will drive you NUTS! It took me 4 days just to discover the windshield opening KNOB wuz loose.
Took me 3 weeks to find that the wood piece, behind my R/H 1/4 window was loose. Took off the trim piece & a little POOOF of insulating foam fixed it! Bill Quiet
__________________
"THE ASSISTANT GURU OF STUFF" |
12-14-2016, 11:05 AM | #11 |
Junior Member
Join Date: Dec 2016
Location: Selah, Washington
Posts: 3
|
Re: Vibration gas tank
Thanks for the good ideas. The vibration occurs when the engine is revved to around 300-900 RPM, even sitting in the shop. I checked the speedo position, it is not the culprit. But, I will check the things you all said to try, maybe I'll find it. It seems to echo on the left side of the firewall when I'm inside of the car.
Thanks again. |
12-14-2016, 11:13 AM | #12 |
Junior Member
Join Date: Aug 2016
Location: Iowa
Posts: 22
|
Re: Vibration gas tank
Could it be that the flame baffle is loose at the neck?
|
12-14-2016, 11:31 AM | #13 |
Junior Member
Join Date: Aug 2010
Posts: 29
|
Re: Vibration gas tank
I found my problem was the repro hood prop kit with the fold out ends. They attach to the radiator rods and the pivot bolt is loose that allows the ends to be folded out to hold the hood in the open position. If you have these things on your car either tighten the bolts or tape the folding end back with black tape.
Wm J. |
12-14-2016, 12:57 PM | #14 | |
Senior Member
Join Date: May 2010
Location: Central, IL
Posts: 3,968
|
Re: Vibration gas tank
Quote:
sometimes when things sound like they are coming from somewhere they are actually the exact opposite.
__________________
1929 Model AA - Need long splash aprons! |
|
12-14-2016, 01:07 PM | #15 |
Senior Member
Join Date: Feb 2011
Location: Lincoln, Nebraska
Posts: 1,907
|
Re: Vibration gas tank
Get someone with young ears to help.
__________________
Dave / Lincoln Nebraska |
|
|
Sponsored Links (Register now to hide all advertisements) |
|