Mecruiser 5.0 MPI Distributor Cap & Rotor

[ceeg52]

I'm in the process of performing a tune-up on my 2004 5.0L MPI engine and would like to know if I need to find Top Dead Center (TDC) before I replace the distributor cap and rotor.

Any help would be appreciated.

Thanks

 

[faztbullet]

no....

 

[ceeg52]

When would you need to find TDC? Is it when you are replacing the distributor shaft?

Thanks Fazbullet.

 

[bobofthenorth]

When would you need to find TDC? Is it when you are replacing the distributor shaft?

If you were replacing the entire distributor assembly. The cap is indexed to the base - it will only go on in one position.

 

[ceeg52]

That makes changing the cap and rotor much easier not having to find TDC.

Thanks for the help!

 

[Bt Doctur]

just remember its 2-4-6 and coil on the left and 3-1-5 on the right side
and the cylinders a 2-4-6 on the left and the cylinders on the right are 1-3-5

 

[fastjeff]

Replace ONE wire at a time.

Jeff

 

[RicardoMarine]

I'm in the process of performing a tune-up on my 2004 5.0L MPI engine and would like to know if I need to find Top Dead Center (TDC) before I replace the distributor cap and rotor.

Any help would be appreciated.

Thanks

no....

That is correct!
You would only need to begin at #1 TDC C/S if doing an R&R of the entire distributor in order to be close enough to fire up.

just remember its 2-4-6 and coil on the left and 3-1-5 on the right side
and the cylinders a 2-4-6 on the left and the cylinders on the right are 1-3-5

I'm thinking that the OP's engine is a GM 5.0L with 8 cylinders!

Also, it would sure be nice if someone would come up with universal terms to describe right/left without needing to mention which direction you are facing at the time. Perhaps something like "Port" and "Starboard"! In which case the GM SBC #'s 1, 3, 5 and 7 cylinders would be on the Port side, and #'s 2, 4, 6 and 8 cylinders would be on the Stbd side.
(just teasing you Bt Doc!)

Replace ONE wire at a time.

Jeff

Ditto that!


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[o2batsea]

Also, it would sure be nice if someone would come up with universal terms to describe right/left without needing to mention which direction you are facing at the time. Perhaps something like "Port" and "Starboard"! In which case the GM SBC #'s 1, 3, 5 and 7 cylinders would be on the Port side, and #'s 2, 4, 6 and 8 cylinders would be on the Stbd side.

Unless it's an old Chris Craft with flywheel-forward engines

 

[RicardoMarine]

Unless it's an old Chris Craft with flywheel-forward engines

Very true!


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[Bt Doctur]

for some reason I was thinking v6 but your motor is a v8

 

[ceeg52]

Thanks for the help.