Re: {Chrysler 300} 300B Stumbling at 60+ MPH
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: {Chrysler 300} 300B Stumbling at 60+ MPH



Thanks everyone for all the tips & potential issues to explore. 

By the way, this only happens under load. New fuel pump & filter were just installed last month.

I do notice the rear bowl remains about 3/4 full while the front bowl is a little less than a 1/4 full. While sitting idle, I do notice that there is fuel slightly spilling over into the front bowl.  Not sure if it should be more fill like the rear bowl.

I'll explore the various pointers everyone has shared and hope one of those will do the trick!

Thanks a ton.

Brian



Sent from my T-Mobile 5G Device
Get Outlook for Android

From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> on behalf of Mark Lindahl <mplindahl@xxxxxxxxxxxxx>
Sent: Saturday, August 5, 2023 3:26:45 PM
To: John Grady <jkg@xxxxxxxxxxxxxxxxx>
Cc: kboonstra@xxxxxxxxxxxx <kboonstra@xxxxxxxxxxxx>; bwalk05 <bwalk05@xxxxxxxxxxx>; Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: Re: {Chrysler 300} 300B Stumbling at 60+ MPH
 
Could be shaft driving fuel pump is worn short and the prevents full stroke of fuel pump. I replaced the shaft and then no problem. The old one was about 3/8-1/2 inch shorter than the new one. 

Mark

On Aug 5, 2023, at 2:03 PM, John Grady <jkg@xxxxxxxxxxxxxxxxx> wrote:

sounds like a serious fuel flow rate restriction drops pressure or starved  at steady flow .At lower flows , volume in carb bowls keep
it going in average 
You can measure PSI with temporary tee rig driving — or let it idle on carb internal fuel with fuel feed line open through hose into pail  etc . There is a spec on pump flow GOM and psi should stay at 3- 4 or better driving 60

But to cut right to it , most likely is corrosion in gas tank clogging the nylon sock , or sock was removed in past rust travels then ruins fuel pump check valves  , bad fuel pump in general , clogged gas filter ( obvious?) .
Some  carbs have a mesh at inlet , although should never see dirt with in line filter 

Slight chance ignition points not right but that presents as an rpm skip more than a uniform bog 
good luck , 
J g 

Sent from my iPhone

On Aug 5, 2023, at 1:04 PM, Keith Boonstra <kboonstra.zeegroup@xxxxxxxxx> wrote:


Brian,

It doesn't sound like it could be an accelerator pump symptom, but maybe fuel starvation.Do you know your fuel pump is good? Does it only stumble under load, or in neutral too?

And don't forget your ignition - points, condenser, plug wires. And consider the coil as well.

Keith Boonstra

-

On Sat, Aug 5, 2023 at 12:15 PM bwalk05 <bwalk05@xxxxxxxxxxx> wrote:
Hello Everyone,

Anyone have any suggestions for troubleshooting Carter adjustments (or otherwise) for a car that stumbles beyond 60 mph.  It starts up fine, idles smooth, accelerates strong up to 60 mph and then stumbles...even at fully open throttle.  

I suspect there is an accelerator pump issue or secondary is not opening under vacuum.  Any thoughts/suggestions would be greatly appreciated!

Thanks,

Brian W.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/43318873-91b4-4c13-b3fc-3032e91bbf2dn%40googlegroups.com.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/CABYqBVpHD6_qA8AuA_T-RkErd5ebnm%2BjdSWCWr4dR-PR2%2B0cJQ%40mail.gmail.com.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/500CCAAB-1FCC-469B-BAFA-0E3E8A5B13DB%40gradyresearch.com.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/182035BC-311A-4B68-802A-5E12AC3600F6%40sbcglobal.net.

--
For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang
---
You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group.
To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion on the web visit https://groups.google.com/d/msgid/chrysler-300-club-international/DS7PR12MB6072C32E4E7CC908728F251FB90EA%40DS7PR12MB6072.namprd12.prod.outlook.com.


Home Back to the Home of the Forward Look Network Archive Sitemap


Copyright © The Forward Look Network. All rights reserved.

Opinions expressed in posts reflect the views of their respective authors.
This site contains affiliate links for which we may be compensated.