So I found something weird.
Thread Starter
|
Senior User
Joined: Apr 2011
Posts: 134
Likes: 0
From: Texas
So I found something weird.
I decided to time my 86 300 I6 today and found that the timing is almost perfect on cylinder #2....
I know I am not drunk nor have I had any medications that would cause me to confuse the 1st and 2nd cylinders but when I try to locate the timing mark with the light when connected to number 1 its on the bottom of the engine.
Being of a logical nature I can only assume that the d-key was not installed by whomever had the truck before me or the balancer is slipping and I need a new one.
I have not replaced one before nor seen one go out. How can you tell?
I know I am not drunk nor have I had any medications that would cause me to confuse the 1st and 2nd cylinders but when I try to locate the timing mark with the light when connected to number 1 its on the bottom of the engine.
Being of a logical nature I can only assume that the d-key was not installed by whomever had the truck before me or the balancer is slipping and I need a new one.
I have not replaced one before nor seen one go out. How can you tell?
Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
You can remove the spark plug on #1 cylinder and feeling for pressure [compression stroke], make sure the piston is at the top of the stroke. Then, look at the distributor rotor and see if it is pointing to the terminal for the #1 cylinder.
Thread Starter
|
Senior User
Joined: Apr 2011
Posts: 134
Likes: 0
From: Texas
She's got good compression and runs like a top. Just cant time the engine by light if I do that she stops running all together.
I can time by ear and find the sweet spot and everything is good but I am afraid I might be running a little off. Guess I should just replace the old one anyway. Looks original.
I can time by ear and find the sweet spot and everything is good but I am afraid I might be running a little off. Guess I should just replace the old one anyway. Looks original.
Senior User
Joined: Dec 2004
Posts: 320
Likes: 0
From: Dallas, Texas
Like 1986F150six said, pull your #1 spark plug, find top dead center, and check where your dizzy rotor is pointing. If it isn't pointing at #1, then adjust it so that it is.
If it is pointing to #1 but the timing mark isn't in the right place, then your harmonic balancer may have slipped and be in need of replacement.
If it is pointing to #1 but the timing mark isn't in the right place, then your harmonic balancer may have slipped and be in need of replacement.
Senior User
Joined: Dec 2004
Posts: 320
Likes: 0
From: Dallas, Texas
No cam yet, but I am running the chevy 250 rockers. I should add that to my sig! But really, that combo is incredible. There are other things you can do - ported and polished head, even a 240 head, but I like this setup just fine.
Thread
Thread Starter
Forum
Replies
Last Post
coleboy11
1967 - 1972 F-100 & Larger F-Series Trucks
10
May 7, 2012 09:49 PM
Infinite Grade
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
19
Jul 9, 2010 01:17 PM
