![]() |
![]() |
#1 |
Registered User
![]() Join Date: Apr 2006
Location: San Diego
Posts: 147
|
Engine dying?
Hope you guys can help me diagnose this problem. I have a 350 with edelbrock carb, the 350 is a fresh rebuild and the edy is new. It was running and idling well when I first got it back from the shop. I don't have a tach so I can't give you any numbers. Then I installed a pcv valve and the idle dropped so low it would just die out. I turned the distributor counter clockwise as far as it goes, and it still dies out if I'm not babying the gas. I decided to bump up the carb and it seemed to settle down, low idle still but seemed stable. I jumped in and took some stuff to the local Goodwill to donate, and it would turn off at some stop lights. I decided to take the highway back home instead of sidestreets to keep from having to stop. Any ideas what might be happening?
|
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Oct 2010
Location: everett washington
Posts: 382
|
Re: Engine dying?
timing is out
__________________
a wise man once said "There are only two real rules to life... 1 - Don't sweat the small stuff 2 - Everything is small stuff |
![]() |
![]() |
![]() |
#3 |
Senior Member
![]() Join Date: Feb 2010
Location: Kennesaw, GA
Posts: 288
|
Re: Engine dying?
Did you just install the PCV? Was the carb set without it being in there? Because when you run the PCV you put in a controlled vacuum leak, and the carb idle mixture and idle RPM will need to be re-set. You really need to get a timing light on it, and a vacuum gauge if possible to get everything setup again and you should be good.
Shawn |
![]() |
![]() |
![]() |
#4 |
Registered User
![]() Join Date: Apr 2006
Location: San Diego
Posts: 147
|
Re: Engine dying?
Yeah I just ran it for the first time since installing the pcv. Will readjusting the carb be enough or is timing the main cause?
|
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
|
Re: Engine dying?
Being as how you turned the distributor counter clockwise as far as it go's, i'd say you have a timing issue as well as a carb adjust issue as well. You need to get the timing back where it belongs, carb adjustment and timing go hand in hand.
__________________
Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
![]() |
![]() |
![]() |
#6 | |
Registered User
Join Date: Mar 2007
Location: San Pedro River, SE Arizona
Posts: 734
|
Re: Engine dying?
Quote:
Start from zero with TDC, vac off the distributor and a timing light. Follow specs. It will be fine.
__________________
CCCC 67 Sting Ray Coupe 327 4sp; 68 K10 Suburban 327 4sp; 69 K20 Lifted 383 4sp; 69 C80 Fire Truck 478 V6 5sp/2sp; 69 C20 Longhorn 327 4sp; 70 C30 Wrecker 350 4sp; 70 C30 Flat Bed 350 4sp; 71 C20 LWB 350 4sp; 72 K5 Blazer 350 4sp; 72 C30 Flat Bed Gooseneck Hauler with sleeper 350/TH400; 72 C20 Longhorn 402 4sp; 52 Mack LTL Supercharged Cummins 5sp x 3sp; 01 Dodge 5.9 HO Cummins 6spd; 02 Safari Trek 2430 8.1 Vortec on Workhorse Chassis; 03 Silverado 2500 HD 4wd Duramax/Allison Moved but still in the family 70 C20 Custom Camper 350/TH350; 72 K5 Blazer CST Highlander 350/TH350 Recently sent to new homes 72 C30 MoHome 402 4sp; 72 K5 Blazer Conv 350 4sp; 75 GMC 6000 Aerial 350 w Allison; 72 GMC 3500 Utility 350 4sp; 70 GMC 3500, 350 4sp |
|
![]() |
![]() |
![]() |
#7 |
Registered User
![]() Join Date: Apr 2006
Location: San Diego
Posts: 147
|
Re: Engine dying?
Got it, I've never really messed with the timing before besides turning the cap and hearin the change in sound. I'll try get a light and get it going.
|
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,216
|
Re: Engine dying?
The carb will have to be readjusted after installing a pcv valve. Set the timing. Then adjust the idle speed with the throttle stop screw. Then turn the idle jets about 1 turn out. With the engine warm & choke off slowly turn each idle jet in till the engine starts slowing down. Then back it out enough till it speeds back up again.
|
![]() |
![]() |
![]() |
#9 | |
Registered User
![]() Join Date: Apr 2006
Location: San Diego
Posts: 147
|
Re: Engine dying?
Quote:
|
|
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|