Finding TDC
- Baseshakers
- BSJ 101 Planning Commitee
- Posts: 929
- Joined: Mon Jan 04, 2010 3:19 pm
- Jeep Year: 2005
- Jeep Model: LJ Wrangler
Finding TDC
I need to make sure the OPDA is aligned correctly, as this may be causing some of the engine issues I am having. Best way I've heard is to find Top Dead Center, and then line up the alignment pin in the OPDA. What is the best way to find TDC? I've read a bunch of things online but none of them are very clear. Figured I'd ask the experts here
"god had his sh!t together when he made boobies" -franky
- Kurt
- BSJ Member
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- Joined: Wed Dec 23, 2009 11:53 am
- Jeep Year: 1992
- Jeep Model: YJ Wrangler
- Real Name: Kurt K.
- Location: Pepperell, MA
Re: Finding TDC
- Pull the spark plugs out
- Stick your finger in the No.1 spark plug hole and rotate crank until you fell the air rushing past your finger. As soon as you fell the air stop rotating the crank. Then carefully rotate the crank until the little notch in the back of the crank pulley lines up with the 0 on the timing marks. It is just in front of the end of the screw driver and has a yellow arrow pointing to it. Might take a few rotations to get the feel of which is the compression stroke verses the exhaust one
- Stick your finger in the No.1 spark plug hole and rotate crank until you fell the air rushing past your finger. As soon as you fell the air stop rotating the crank. Then carefully rotate the crank until the little notch in the back of the crank pulley lines up with the 0 on the timing marks. It is just in front of the end of the screw driver and has a yellow arrow pointing to it. Might take a few rotations to get the feel of which is the compression stroke verses the exhaust one
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- Frank
- Frankie BSJ Member
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Re: Finding TDC
Nicley done Kurt ! FjR68