Rust under distributor Cap and Rotor

rooke222

rooke222

Cadet
Joined
Apr 3, 2009
Messages
9
I have 1984 Mercruiser 260 5.7L Thunderbolt Ignition IV. I have had trouble starting the engine this year and I decided to do a tune up. I have replaced the plugs, wires, and I hve bought a new Cap and Rotor. Before I install the new cap and rotor I wanted some advice on how I should clean up what is under the cap. There is a lot of build up and rust on the ( i think it is a ignition sensor) can I get away with sanding the terminals or should i replace this sensor?
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S

Sea Buzzard

Cadet
Joined
May 3, 2010
Messages
16
Re: Rust under distributor Cap and Rotor

Save yourself a headache. Spend the money. I speak from experience.
 
greg82255

greg82255

Senior Chief Petty Officer
Joined
Oct 26, 2009
Messages
781
Re: Rust under distributor Cap and Rotor

I'd just replace the sensor. It's about $25
 
rooke222

rooke222

Cadet
Joined
Apr 3, 2009
Messages
9
Re: Rust under distributor Cap and Rotor

Ok thanks guys,

I decided to replace The ignition sensor, rotor, cap, wires, plugs. The engine idles fine but when under load it backfires a bit and has lack of power.... I think my timing is off now... I have the timing light ready to go but I am confused with the part where it says to use a jumper wire to connect the two white wires from the distributor.. The only wires that come out of the distributor are the white/red and the white/green from the ignition sensor. Can anyone give me an idea how to install this jumper wire. This is a Thunderbolt IV 5.7 260hp Mercruiser.

Thanks in advance
 
D

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,099
Re: Rust under distributor Cap and Rotor

just time the ignition like the conventional method, you do not need to jumper any wires
 
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