FINDING TDC? - Ford Truck Enthusiasts Forums


Thread Tools Search this Thread
Old 06-17-2012, 03:19 PM
chamblizi's Avatar
chamblizi chamblizi is offline
Senior User
Thread Starter
Join Date: Apr 2012
Location: Des Moines, WA
Posts: 400
chamblizi is starting off with a positive reputation.

Hey how do i find top dead center i am changing my timing chain soon.

Reply With Quote
Old 06-18-2012, 07:14 PM
Beechkid Beechkid is offline
Join Date: Aug 2002
Location: Southern California
Posts: 4,134
Beechkid has much to be proud ofBeechkid has much to be proud ofBeechkid has much to be proud ofBeechkid has much to be proud ofBeechkid has much to be proud ofBeechkid has much to be proud ofBeechkid has much to be proud ofBeechkid has much to be proud of
Ok, pull the valve cover & #1 spark plug.

place the tip of a finger in the spark plug hole to feel pressure or suction (if you are working by yourself, you can rig up a baloon to part of an old spark plug that screws into the hole too)
rotate crankshaft (with wrench) until you feel pressure stop & it starts to suck, look at valves, both exhaust & intake should be closed.

reverse rotate the crankshaft until it starts to suck again....when you feel the point that it does not suck or push air out, the piston is at top dead center, this will also allow you to verify if the timing marks on the crankshaft are correct/true.
Reply With Quote
Old 06-25-2012, 02:01 PM
Jippah's Avatar
Jippah Jippah is offline
Junior User
Join Date: Aug 2005
Location: Columbia, MD
Posts: 52
Jippah is starting off with a positive reputation.
That is a very unique way of finding TDC.
I've always done it the hard way and removed the cylinder head to do a visual check :\
But that was on little SOHC 4 bangers
Reply With Quote
Old 07-04-2012, 09:47 PM
twosfamily twosfamily is offline
Freshman User
Join Date: Mar 2010
Location: NEK Vermont
Posts: 48
twosfamily is starting off with a positive reputation.
I like that balloon trick! I will have to try it sometime!
Reply With Quote
Old 05-19-2014, 10:20 AM
zombievan1966's Avatar
zombievan1966 zombievan1966 is offline
New User
Join Date: May 2014
Location: edmond okla
Posts: 7
zombievan1966 is starting off with a positive reputation.
pull #1 plug.. pop cap off of dizzy. #1 tdcc will bee #1 piston all the way up.. the balancer mark lined up with the f mark on timing cover and the rotor bug facing the #1 termnal on the dizz cap...if your valve cover is off.. both valves should be opened and u should be able to wiggle the rockers a lil bit.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Help find this grill cdwoodcox 2009 - 2014 F150 3 08-22-2016 07:48 AM
Gem module Wrecking ball 1999 - 2003 7.3L Power Stroke Diesel 11 06-27-2016 07:52 PM
Wide windshield chrome, hard to find? Where to find? four-sixty-power 1973 - 1979 F-100 & Larger F-Series Trucks 11 05-09-2016 09:16 AM
Fuel Sending Unit for 1969 F100 Davidjmcd 1967 - 1972 F-100 & Larger F-Series Trucks 1 10-04-2012 03:47 PM
Where can I find an evaporator for my 78 f100? jeff gammon Cooling, Heating, Ventilation & A/C 1 06-30-2010 07:34 PM

Go Back   Ford Truck Enthusiasts Forums >

1, 2003, 289, 292, 42, f150, find, ford, lightning, navigator, taurus, tdc

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -5. The time now is 10:41 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.