Glowing headers
Melting Slicks
Joined: May 2006
Posts: 3,303
Likes: 14
From: Lynn MA
I think that A LOT, if not ALL of the suggestions made are valid points, especially when analyzing over an internet forum and not being right there to check out the car....
Fishslayer had a good amount of valid points with his analysis...
Fishslayer had a good amount of valid points with his analysis...
Advanced
Joined: Sep 2012
Posts: 94
Likes: 2
From: Seattle Wa
its easy to come along after every possibility has been eliminated and be the "expert" /and tell everyone they re WRONG! .. I see no point where you offered any assistance whatsoever.. at least I helped him eliminate every possibility one by one.. what did you do to help along the way??
but by all means, you are the expert,solve the mystery for him ..I ll stand aside..
but by all means, you are the expert,solve the mystery for him ..I ll stand aside..
Racer
Joined: Sep 2011
Posts: 408
Likes: 1
From: Ormond Beach Florida
I believe you've got the plugs all wrong on the distributor. The reason the firing order was mentioned was b/c that's the sequence the plugs should follow on the distributor. As I see it, you have the #1 wire in the correct spot, and I THINK you go clockwise from there to 8-4-3-6-5-7-2, but don't quote me on that, and I don't have a book close by to verify.
Thread Starter
Instructor
Joined: Jun 2012
Posts: 212
Likes: 0
FISHSLAYER143 and BOSTONCAMARO have both helped me a great deal, even though i havet found the problem yet, they took the time to help me understand what i need to do bit by bit, even tho alot of this is new to me, they kept their patience, with help and extensive knowledge that they have, im likely to find the cause, and hopefully help anyone else with the same or similar problem. Keep up the good work guys, people like that are what make forums like this. So keeping on subject....
I havent had chance to run the engine to test much due to the noise and im in a town house. But i took off the air filter/cleaner and found a fine dirt/dust all around the inside of the carb.... i then noticed there is no seal between the filter and the top of the carb (i would assume there should be?)
When i took the filter (excuse my terminology and correct me) the front flap which was the width of the carb (covering 2 holes) which is rectangle was open about 1/4 inch... as soon as i touched it it snapped closed, is that what the choke adjusts?
i will use carb cleaner or seafoam and give it a go....
could this be the cause for one cylinder to get hot?
Is there anything else i should clean?
I havent had chance to run the engine to test much due to the noise and im in a town house. But i took off the air filter/cleaner and found a fine dirt/dust all around the inside of the carb.... i then noticed there is no seal between the filter and the top of the carb (i would assume there should be?)
When i took the filter (excuse my terminology and correct me) the front flap which was the width of the carb (covering 2 holes) which is rectangle was open about 1/4 inch... as soon as i touched it it snapped closed, is that what the choke adjusts?
i will use carb cleaner or seafoam and give it a go....
could this be the cause for one cylinder to get hot?
Is there anything else i should clean?
Instructor
Joined: Aug 2012
Posts: 162
Likes: 5
From: Visalia CA
I'd like to ask a couple questions to help me understand the problem.
Let's start from the beginning. You have been driving the car with no problems. Buy a new set of headers, put them on then this problem came up. Right? No other problems? Nothing else was changed?
Let's start from the beginning. You have been driving the car with no problems. Buy a new set of headers, put them on then this problem came up. Right? No other problems? Nothing else was changed?
Thread Starter
Instructor
Joined: Jun 2012
Posts: 212
Likes: 0
Its all in the previous posts....
But in short, original owner did minor modifications to the engine, (cams, rockers, carb) with zero miles on it, i bought it, changed headers and plugs.. i still have zero miles on it as its not complete
It was heating #7 primaries on old headers and now the new headers.
But in short, original owner did minor modifications to the engine, (cams, rockers, carb) with zero miles on it, i bought it, changed headers and plugs.. i still have zero miles on it as its not complete
It was heating #7 primaries on old headers and now the new headers.
Instructor
Joined: Aug 2012
Posts: 162
Likes: 5
From: Visalia CA
Sounds like a vacuum leak to me. I see where you checked the top side of the manifold....how about in the valley? The intake was removed to do the cam change....maybe old gasket wasnt cleaned off good....maybe wrong gaskets put back on?
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Thread Starter
Instructor
Joined: Jun 2012
Posts: 212
Likes: 0
I sprayed carb cleaner all round the intake, carb, all the bolts holding them down, vacuum pipes etc and no change in idle speed
Race Director
Joined: Oct 2000
Posts: 15,040
Likes: 79
From: central FL, near the beach.
brady
u should be out driving it around.
holding it at 2000 for a few SECONDS is a test i use to see if the carb has started flowing from the booster. usually that is too low a speed, and it could go very lean.(red hot)
so drive it and see how it runs in the real world. Try 17* base timing. if it pings, back off. Drive it to autozone and get a vacuum gauge.
u should be out driving it around.
holding it at 2000 for a few SECONDS is a test i use to see if the carb has started flowing from the booster. usually that is too low a speed, and it could go very lean.(red hot)
so drive it and see how it runs in the real world. Try 17* base timing. if it pings, back off. Drive it to autozone and get a vacuum gauge.
Thread Starter
Instructor
Joined: Jun 2012
Posts: 212
Likes: 0
Race Director
Joined: Oct 2000
Posts: 15,040
Likes: 79
From: central FL, near the beach.
Thread Starter
Instructor
Joined: Jun 2012
Posts: 212
Likes: 0
I havent set it to 17* base yet, i wanted to know a safe mechanical advance and total advance as i read its not good to have too much, and i dont want to bust my engine... just being safe rather than sorry.
When you say ping? please elaboarate.
I have a vacuum gauge.
yes, obx headers and side pipes with hooker max flow inserts
Its also hooked up to the headlight switch, some part of the heating, the bar right at the front of the car.... excuse my terminology
The engine will idle at 900 or a little less.
Last edited by brady5885; Jan 21, 2013 at 06:45 PM.