Surging and cutting out - Mopar Forums
 


Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 11-11-2017, 02:18 PM   #1
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
Unhappy Surging and cutting out

Hi, was hoping someone could give some advice on my 66 Fury

360 Magnum, Edelbrock 4 barrel, with an electric fuel pump.

Was running fine before...

I replaced the fuel tank and sending unit because of a leak in the tank.

Ran and drove fine for 20 min, then started cutting out, surging, backfiring through the carb. Would cut out when getting on the gas, but "sounded" fine with minimal throttle. Was unable to gain speed, eventually sputtering to a stop. After sitting a few seconds, I was able to start and drive fine for a few min, before it would cut out again. At that point I thought, maybe a venting issue or, fuel pump issue.

I replaced the fuel pump and checked the tank, It's definitely moving the fuel. So, out for another ride, 20 min in, it cuts out and does the same thing. It's not a 1 cylinder isn't firing type miss, more like a complete surge of them all.

I pulled over, pop the hood, fuel regulator holding steady at 5 psi. Hit the throttle at the carb a few times, broke up a little, fuel filter stayed full.

At that point, I started to think maybe it's something else. Pulled the air filter off, hit the throttle again and it shot a fireball at my face.

Now I'm thinking maybe it's the coil, but was hoping someone else might know what is happening or could provide some ideas.

Thanks.

Last edited by Shadow; 11-11-2017 at 02:45 PM.
Shadow is offline   Reply With Quote
Old 11-11-2017, 08:00 PM   #2
Mopar Lover
 
RacerHog's Avatar
 
Join Date: Jun 2013
Location: Monrovia SO-CAL (USA)
Posts: 5,955
Thanked 445 Times in 441 Posts
Was running fine before all the listed items?
RacerHog is offline   Reply With Quote
Old 11-11-2017, 08:13 PM   #3
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
Yes, ran perfectly before the tank and new sending unit. The first long drive (after about 25-30 min) is when it first happened.

If I pull the hose before the fuel pump, fuel will flow out very fast by just gravity siphoning. I'm sure there are no restrictions. The regulator is reading a steady 5 psi as well.
Shadow is offline   Reply With Quote
Old 11-11-2017, 09:08 PM   #4
Mopar Lover
 
Join Date: Apr 2011
Posts: 4,160
Thanks: 0
Thanked 371 Times in 366 Posts
WHat kind of ign do you have ?
TVLynn is offline   Reply With Quote
Old 11-11-2017, 09:14 PM   #5
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
Just a standard Accel coil.
Attached Thumbnails
Surging and cutting out-21728443_10159682488765157_4102298582732955473_n.jpg  
Shadow is offline   Reply With Quote
Old 11-12-2017, 12:33 AM   #6
Mopar Fanatic
 
Join Date: Jan 2010
Posts: 440
Thanks: 0
Thanked 36 Times in 35 Posts
Take it for a short drive with the gas cap off to check for good venting. Also, most recently I have witnessed a fuel pickup screen sucked up tight to the end of the pickup tube! Similar issues! Also a new tank and pickup install!
Drag Pak is offline   Reply With Quote
Old 11-12-2017, 08:14 AM   #7
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
Thank you for the suggestions.

I did try without the cap and there was no improvement. I've really been trying to avoid pulling the tank back out, but it looks like I may have too.
Shadow is offline   Reply With Quote
Old 11-12-2017, 09:08 AM   #8
Mopar Lover
 
Coronet 500's Avatar
 
Join Date: May 2011
Location: Ontario Canada
Posts: 2,065
Thanks: 0
Thanked 230 Times in 221 Posts
Could simply be a tiny piece of debris made it to the carb needle and seat.or debris restricting filter during repair.
Coronet 500 is offline   Reply With Quote
Old 11-12-2017, 11:29 AM   #9
Mopar Lover
 
RacerHog's Avatar
 
Join Date: Jun 2013
Location: Monrovia SO-CAL (USA)
Posts: 5,955
Thanked 445 Times in 441 Posts
I'm kind of with the other guys..
I'm also thinking you have an issue with the newly installed parts, as long as it happed after that install. Something is blocked, restricted, would be my thought. I would double check and reflush the whole system from the carb back to the tank.
RacerHog is offline   Reply With Quote
Old 11-12-2017, 01:21 PM   #10
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
I swapped out out the new sending unit with the original. Haven't got to drive it around yet, but I see no issues with the new one. And now my gauge doesn't work again.
Shadow is offline   Reply With Quote
Old 11-12-2017, 02:39 PM   #11
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
Yeah, it's still doing it It also has a very strong smell a fuel. I'm guessing because it's not being burnt.

It's so damn consistent too, always runs great for about 15-20 min.
Shadow is offline   Reply With Quote
Old 11-13-2017, 12:03 PM   #12
Mopar Lover
 
RacerHog's Avatar
 
Join Date: Jun 2013
Location: Monrovia SO-CAL (USA)
Posts: 5,955
Thanked 445 Times in 441 Posts
OK.. So we can Rule out that issue.. Now you can swap back in the new one and know that that was not the issue, or that you had caused the issue when you swapped it...
Once you get that done, From what you just described, you could be fighting an ignition issue, that might have just came up at the same time for some reason?
Looking at the picture, Are you running an electric choke off the ignition coil? if so in hook it and see if that fixes the issue? you might need to also swap coils.
RacerHog is offline   Reply With Quote
Old 11-13-2017, 12:39 PM   #13
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
Yeah, at least I know that is not the issue now. My choke is electric and pulling power from the coil. I will try to unhook it and see if I notice a difference. I have a new fuel filter coming too but I doubt that is the issue. Hopefully tonight I can take it out and do some more testing. Thanks again for the suggestions.
Shadow is offline   Reply With Quote
Old 11-14-2017, 11:32 AM   #14
Mopar Lover
 
RacerHog's Avatar
 
Join Date: Jun 2013
Location: Monrovia SO-CAL (USA)
Posts: 5,955
Thanked 445 Times in 441 Posts
Keep us posted....
RacerHog is offline   Reply With Quote
Old 11-14-2017, 12:58 PM   #15
Mopar Lover
 
Join Date: Apr 2010
Location: Long Island, NY
Posts: 1,425
Thanked 108 Times in 108 Posts
Shadow -

What's your fuel pressure when it running fine and after 20 minutes?
If you don't have a fuel pressure gauge, get a cheap one and try it.

What else did you change or remove/reinstall ?
Fuel filter?

Archer
Archer is offline   Reply With Quote
Old 11-14-2017, 01:58 PM   #16
Mopar Lover
 
Iowan's Avatar
 
Join Date: Mar 2015
Location: Lost In Time!
Posts: 1,918
Thanked 107 Times in 107 Posts
Quote:
Originally Posted by Shadow View Post
Yeah, at least I know that is not the issue now. My choke is electric and pulling power from the coil. I will try to unhook it and see if I notice a difference.
try running a jumper from the battery for the choke, I have had problems with the same setup. The fix was a different power lead for the choke.
Iowan is offline   Reply With Quote
Old 11-15-2017, 11:37 AM   #17
New Member
Thread Starter
 
Join Date: Oct 2017
Posts: 10
Thanked 0 Times in 0 Posts
Woohoo, fixed! It was the fuel filter. I had a small one I could take apart and clean. Apparently, I wasn't cleaning it right. I know I cleaned it after changing the tank but, it was clogged tight, could barely blow throw it.

Thanks again everyone for the suggestions and help!
Shadow is offline   Reply With Quote
Old 11-16-2017, 06:20 AM   #18
Mopar Lover
 
Join Date: Apr 2010
Location: Long Island, NY
Posts: 1,425
Thanked 108 Times in 108 Posts
Shadow -

Why did I think that was it???
It's not like that ever happened to me ...

Archer
Archer is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2004 Intrepid SE 2.7 cutting out on full throttle. 67gtxclone Intrepid/Concord/Vision/300M 0 10-05-2010 07:07 PM
99 dodge ram surging gotdust 94-Current Dodge Trucks 12 09-19-2010 07:07 PM
Speedometer Tachometer Surging When Cold 91shadowTurbo Do-It-yourself Section 0 08-09-2010 06:30 AM
Engine cutting out Aspen General Discussion 2 09-01-2009 09:10 PM
440 Electronic Ignition Conversion- cutting out dsmtuned B-Body 4 04-08-2009 11:52 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -7. The time now is 09:20 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.