Carver Owners Forum

Brought the old gal up the river to winter storage. Ran great, or so I thought. Started fine, idled supreme and moved along at 3,000 perfectly. I thought I would give a burst of WOT and that is when bad stuff happened. Port engine went up to 3950-4000. About normal with the full tankage and weight. Starboard stumbled between 3200 and finally made it up to 3700 but was misfiring, so I backed it off. I replaced new plugs (NGK was in there) new Quick Silver wires and cap. I wires are close together, but small wire separators. The wires weren’t what I thought as for a full custom set. Just 4 short wires and 4 Long, so the long ones dangle some. Ran great at speed before tune up. Starboard engine ran fine, just on teh 1200 hour port. Thinking of checking wires for proper placement, but I replaced 1 at a time. I usually dont do an entire tune up at once. I usually do plugs, then run it to see if there is a proble, then cap, then wires. Starboard cap was worn badly on inside, but port looked almost new. Ideas?

If it was running good up to 3200 then I seriously don't think it's a miswiring or even a cross-fire situation.

Loose wire(s) somewhere? maybe.

Had you had them both upto wot recently before the tune up? What bout fuel filters change during tune up?

Both were up to WOT before the tune up and hit 4000. I did not change fuel filter yet, as it ran good before the tune up, just started hard. Now starts easily, as plugs were gapped at .030 on starboard . I gapped at .035. The wires I got were Qucksilver. However, there were 4 short and 4 long wires for each engine, rather than 4 custom sizes. This is what I bought:

I used die electric on each wire. Starboard did get up to 3900, but port stumbled. It did surge up to 3900, but dropped right back.

DOes anyone have the part number for wires for a 1994 454 Gen V with Thunderbolt ignition?

Just go back and check all your wire connections at the plugs and the cap.....if you put dielectric on there they could have slipped loose if not on just right.

Post a serial number Tony

It is real easy to cross wires. Also, if your engines are Crusader, that plug gap might be .045. er

Thunderbolt ignition would make them Mercs

Going down this week to get a serial number. I did see that Sierra had custom wires. Since that one was running pretty good at the time, and I saved the cap and rotor (looked like new) I may put old cap back on after checking the wires.