Re: Odd /6 problem
[Re: SattyNoCar]
#1532064
11/12/13 12:38 PM
11/12/13 12:38 PM
|
Joined: Jan 2003
Posts: 20,334 Park Forest, IL
slantzilla
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 20,334
Park Forest, IL
|
What carb/intake are you using? You don't happen to have one of the 2 piece welded intakes do you?
Was the head or block decked much? If so the intake may not be sealing against the head. When you deck the block there is a casting block that will hold the intake away from the head.
From that pic with the head off it looks pig rich. I have seen that caused by vacuum leaks before.
"Everybody funny, now you funny too."
|
|
|
Re: Odd /6 problem
[Re: rustbuckett68]
#1532067
11/12/13 02:03 PM
11/12/13 02:03 PM
|
Joined: Oct 2012
Posts: 1,106 Northeast
VincentVega
super stock
|
super stock
Joined: Oct 2012
Posts: 1,106
Northeast
|
Fouled plugs don't "unfoul" themselves, and they also create carbon hotspots which screw up cylinder firing. so if you are doing all of this diagnostic work with fouled plugs, you're wasting your time
the other thing I notice is the exhaust pipe flange. it looks like the entire thing has been leaking. slant sixes are very sensitive to exhaust leaks because they are small engines and already dialed in to be very lean. that could certainly cause popping.
Make sure the heat riser valve in the exhaust manifold isn't frozen shut. that'd make it run like a dog
Looking for 1975 through 1978 B body 4 door sedan sheet metal or parts cars - monaco, fury, coronet. Please let me know
|
|
|
Re: Odd /6 problem
[Re: BigBird]
#1532072
11/12/13 08:51 PM
11/12/13 08:51 PM
|
Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
I doubt if you have one laying around but I'd wanna swap the intake manifolds. After all this I would have to know what it was all along no matter what the cost
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Odd /6 problem
[Re: RapidRobert]
#1532073
11/13/13 09:55 AM
11/13/13 09:55 AM
|
Joined: Jan 2003
Posts: 1,279 Buzzardbreath Wyoming
BigBird
OP
pro stock
|
OP
pro stock
Joined: Jan 2003
Posts: 1,279
Buzzardbreath Wyoming
|
You don't know the kind of pack rat I am. I do have another intake laying around and I think I'll try it when I put the head back on. That is one thing I haven't tried yet.
Last edited by BigBird; 11/13/13 12:37 PM.
|
|
|
Re: Odd /6 problem
[Re: BigBird]
#1532075
11/14/13 04:51 AM
11/14/13 04:51 AM
|
Joined: Jan 2003
Posts: 20,334 Park Forest, IL
slantzilla
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 20,334
Park Forest, IL
|
If the EGR was stuck open it would run like crap. Glad to hear all is well again.
"Everybody funny, now you funny too."
|
|
|
Re: Odd /6 problem
[Re: RapidRobert]
#1532083
11/16/13 12:15 PM
11/16/13 12:15 PM
|
Joined: Nov 2003
Posts: 12,521 Western Colorado High Desert
moparmarks
I Live Here
|
I Live Here
Joined: Nov 2003
Posts: 12,521
Western Colorado High Desert
|
Quote:
Quote:
Was it the EGR?
If it was leaking (I had one that did) it'd be a massive vac leak
2 things cause a backfire through the carb, lean condition or fire while an intake valve is still open. Bad EGR can cause a lean condition. Glad you got her fixed.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
|
|
|
|
|