Tune-up

[fechtk2]

Good Morning, i did a recent tune-up on my 3.0L merc (plugs,wires,rotor,cap) and now it runs terrible, does anyone have any idea why? thank you.

 

[dubs283]

Poor quality/incorrect components, timing off, firing order incorrect, carburetor adjustment, etc...

 

[alldodge]

Double check

 

[fechtk2]

Double check
View attachment 379638

I will recheck my wires, thank you

 

[fechtk2]

Poor quality/incorrect components, timing off, firing order incorrect, carburetor adjustment, etc...

I'll go over it again... It ran fine before these new parts.thank you.

 

[Scott Danforth]

remember, if the distributor was ever removed, you will need to verify tower 1's location on the distributor. with motor at TDC on cylinder #1, the rotor will be pointing to tower #1

 

[ThomW]

I'd go with what Scott said. If you twisted the distributor while doing cap or rotor, the timing will be off. Or the plug wires got put on in the wrong order. Hopefully it'll be a quick and simple fix for you.