302 missing on 2 cyl
Thread Starter
|
New User
Joined: Mar 2003
Posts: 7
Likes: 0
From: Lexington,NC
302 missing on 2 cyl
I have a 302 that is not making power on #s 6+7. The engine is a 1976 and only has 5000 or so miles on a complete rebuild. Everything internal is new and it has a new intake and carb. The only thing I reused is the dist. I put a new cap and rotor, plug wires, coil and plugs in it. But it still misses. I am going to get a used dist body tomorrow at the junkyard. I can't afford a new dist this close to Christmas.
The problem didn't start until I put the new Intake, Carb and headers on. That is how I know what cylinders are not doing anything the paint is still on the headers where the cyl are dead. All the plugs are firing but the fire looks weak and it is red instead of blue. I hope you all can help, I am at the end of my rope on this one.
The problem didn't start until I put the new Intake, Carb and headers on. That is how I know what cylinders are not doing anything the paint is still on the headers where the cyl are dead. All the plugs are firing but the fire looks weak and it is red instead of blue. I hope you all can help, I am at the end of my rope on this one.
Thread Starter
|
New User
Joined: Mar 2003
Posts: 7
Likes: 0
From: Lexington,NC
I have checked the wires and done a compression check. The cylinder pressure is 95% of each other(125lbs). Would the coil still work but just be weak? If so I will get another coil before I get the dist. The coil is less than a year old, but I don't have the recipt. Thank you for the quick reply.
Posting Guru
Joined: Nov 2003
Posts: 1,071
Likes: 1
From: Concord, New Hampshire
125psi low!!!???? My 351 had 105 to 110, and it ran great, well untill a piston ring cracked, and still than had some serious bag. it sounds more like your firing order is bad or something, if you had a bad head gasket you wouldent have good compression at all. maby a set of wires, cut and grounding somewhere? try running it at night, with the hood open with no lights around anywhere, and look for some sparks jumping,
Thread Starter
|
New User
Joined: Mar 2003
Posts: 7
Likes: 0
From: Lexington,NC
I bought another coil and it helped alot. The #6cyl is firing now but #7 still seems to be missing. Thanx for all the help.
Trending Topics
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Freshman User
Joined: Feb 2004
Posts: 38
Likes: 0
I have a '71 302 and was going crazy trying to get it run right.I went through EVERYTHING and it turned out to be loose intake manifold bolts.This made it miss and idle bad.Seems like a good place to start since it was where I ended up.I woulda never figured it out if it wasn't for you'll here in the forums who kept saying vacuum...vacuum...vacuum.
Ready for the maiden voyage in the V8 Ranger
This place is great-------------Thanks to all Rick
Ready for the maiden voyage in the V8 Ranger
This place is great-------------Thanks to all Rick
Thread
Thread Starter
Forum
Replies
Last Post
Beedub109r
1973 - 1979 F-100 & Larger F-Series Trucks
2
Oct 14, 2014 10:22 AM
franke67
Ford Inline Six, 200, 250, 4.9L / 300
8
Oct 7, 2012 11:43 AM
hellakornhaus
1967 - 1972 F-100 & Larger F-Series Trucks
7
May 31, 2006 12:38 PM
99Diesel
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
13
Jul 17, 2003 06:07 PM
