engine idle problems

Reply Subscribe

Thread Tools

Search this Thread

Jul 23, 2003 | 02:12 PM

bronco--351W

Thread Starter

New User

Joined: Jul 2003

Posts: 20

Likes: 0

engine idle problems

I have a quick question for you I have an '81 bronco 351w edelbrock intake and edelbrock carb. I am having the worse troubles trying to get it to idle right. I have to have the idle mixture screws out about 5 turns before it idle descent. and at that point it is at 1500rpms. I have the pcv and the carbon canister t'ed together and plug into the front of the carb then I have the brake booster plugged into the back into the intake. I sprayed some starting fluid around the carb and in the back of the carb when I spray it it revs up I jsut bought the edelbrock egr kits and have new gaskets for the carb. I called edelbrock and they said the heat riser that goes between the egr plate and the carb might be bad.. what are your thoughts?

Last edited by bronco--351W; Jul 23, 2003 at 02:46 PM.

Jul 24, 2003 | 12:44 PM

spikedog

Posting Guru

Joined: Apr 2003

Posts: 1,903

Likes: 2

From: Wyoming

engine idle problems

Does it run okay other than at idle? Might want to check the timing. Does your distributor have vacuum advance?

THe starting fluid seems to be pointing something out to you. If it's the EGR, wouldn't that be a problem at all RPM's?

Jul 24, 2003 | 04:10 PM

travisd

Senior User

Joined: Nov 2000

Posts: 201

Likes: 0

From: Drayton, ND

engine idle problems

It sounds like to me that you have a vacuum leak wherever you are spraying the starting fluid. You could try to identify where it is using the fluid. Make sure all unused ports are plugged and connections sealed.

Jul 24, 2003 | 05:24 PM

bremen242

Logistics Pro

Joined: Jan 2002

Posts: 3,739

Likes: 3

From: GANS

engine idle problems

i have the same problem with mine, and i just put on an edelbrock carb & performer 351w. mines non-egr. lemme know if you find the problem.. I haven't had a chance to play with mine yet.

Jul 28, 2003 | 10:08 AM

bronco--351W

Thread Starter

New User

Joined: Jul 2003

Posts: 20

Likes: 0

engine idle problems

my engine runs fine other than idle I can go up hills with power to spare and everything I just have a rough idle that I can't seem to fix. my timing is 10% btc I just installed a new heat riser and I dont have the problem with the starting fluid anymore but it still idle a little rough and I have to have the idle screws out about 3 1/2 turns

Jul 28, 2003 | 08:00 PM

bremen242

Logistics Pro

Joined: Jan 2002

Posts: 3,739

Likes: 3

From: GANS

engine idle problems

try follow the idle adjustment procedure in the edelbrock manual.

if its idleing at 1500 rpms, you need to turn the thottle stop down

Jul 29, 2003 | 09:30 AM

Finnford

Freshman User

Joined: Apr 2003

Posts: 49

Likes: 0

engine idle problems

I had a similiar problem went I installed a 1405 Edlebrock on my 351W, the secondaries were open just a little. The linkage on the left side was touching the body preventing it from closing. Try forcing the secondarys closed to see if the idle goes down.