Vanning.com logo
Boxdin
Site Navigation


Advertisements
Recent Posts
1997 Chevy Express Cobra Conversion
by 1983G20Van - August 12th 2022 12:48 pm
1969 Econoline Shorty
by Charlie99909 - August 12th 2022 12:22 pm
DaveT's 93 Short Bus Build
by DaveT - August 12th 2022 12:30 am
G20 Engine Help in Indiana?
by Lionhead - August 11th 2022 11:32 pm
G10 van parts
by SDMickey - August 11th 2022 9:46 pm
Featured Links


Previous Thread
Next Thread
Print Thread
Rate Thread
1975 318 carb spitting and more....
#791905 June 07th 2022 9:59 pm
Joined: Mar 2006
Posts: 284
Likes: 1
Scrotor Offline OP
enthusiast
OP Offline
enthusiast
Joined: Mar 2006
Posts: 284
Likes: 1
First off,
It's has been toooooo long since I've been here. My van has been neglected sitting in the covered car port for yeaaars. This was partly due to medical issues and driving, and a leaky "freeze" plug but that's been remedied and no one called Van Protection Services on me.

I need some advice on troubleshooting what may be a carb issue. This carb was replaced years back, but still, didn't drive the van much after.
As a newbie on engine troubleshooting, I'm not going to try to explain, rather here are some youtube links of the issue.

Prior to firing this van up again the oil / filter and fuel filter have been changed.
I can't rule out the fact that the van has a little old gas then new gas mixture and i added fuel preservatives. But I do recall this problem before the van went in to "hibernation" though.





Any guidance is much appreciated.


Wanted:
Dodge B-100 Panel 72-75 Manual/6-Cyld
Re: 1975 318 carb spitting and more....
Scrotor #792259 June 18th 2022 2:05 am
Joined: Jul 2020
Posts: 109
Likes: 5
member
Offline
member
Joined: Jul 2020
Posts: 109
Likes: 5
Maybe a valve not closing. The ignition is off, the cylinder compresses but the intake valve is not fully closed allowing it to blow back through the intake manifold like that. I would try a compression test and see how you get on. i would also check the timing is on point

Disclaimer- I do not know what I am talking about and on average it takes me about 6 months to figure out and fix what is wrong with my vehicles


1988 B250 Conversion Van
https://i.imgur.com/uQPPuqo.jpg
Re: 1975 318 carb spitting and more....
KogonDodge #793707 August 01st 2022 11:19 pm
Joined: Mar 2006
Posts: 284
Likes: 1
Scrotor Offline OP
enthusiast
OP Offline
enthusiast
Joined: Mar 2006
Posts: 284
Likes: 1
Thanks for the reply KogonDodge, I'm way late on posting an update.

So it dawned on me- The van is running @ 1500 varying to almost 2000 RPMs while in park. I know this can't be the RPM's to have when idling in park. Looking on line I learned of condition called "Dieseling" in which best described the issue I was having and how high RPM's can cause it.

Turned out that the carburetor linkage was sticky and was not fully relaxing onto the Idle screw.


Wanted:
Dodge B-100 Panel 72-75 Manual/6-Cyld
1 member likes this: frscke1
Re: 1975 318 carb spitting and more....
Scrotor #793736 August 02nd 2022 8:24 am
Joined: May 2018
Posts: 1,492
Likes: 9
A
old hand
Offline
old hand
A
Joined: May 2018
Posts: 1,492
Likes: 9
my 85 b150 would self adjust and diesel like the car on Uncle Buck.


When in doubt..get the sawzall out..

Moderated by  Astro, Ram4ever 

Link Copied to Clipboard
Donate


discovery
Who's Online Now
0 members (), 2 guests, and 6 robots.
Key: Admin, Global Mod, Mod
Newest Members
Rayinoregon, LeaveNothingStock, BobButNotThatBob, Swede, trent_maka
12374 Registered Users
Top Posters (30 Days)
SDMickey 149
frscke1 62
kursed 51
NEmery 27
Forum Statistics
Forums68
Topics38,495
Posts544,451
Members12,374
Most Online177
May 8th, 2013

Powered by UBB.threads™ PHP Forum Software 7.7.4