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1999 Challenger 1800 Rectifier Upgrade

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BoLongo

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I hope everyone is excited for the summer season. I had the boat in the driveway yesterday on the garden hose; I shifted the boat into drive so I could rev the engine. For some reason the port engines had a lean runaway and revved into a very high RPM range. I pulled the safety switch it did not stop, I held the stop button still kept running, next pulled the choke but it kept running. I ran back to the engine and pulled the spark plug wires still kept running than all of a sudden it died. I let it rest awhile, started up fine and all seemed to be OK.:thumbsup:

Took it out to the lake today and as soon as I got on the gas I was getting some backfire on the port engine and it would not rev past 5000 RPM, the Starboard engine was running fine. I changed spark plugs and I was able to go around the lake at about 5000 RPMs on both engines. Then the starboard engine started backfiring and it would not rev past 4000 RPMs I limped the boat back to the ramp with both engines not able to rev past 4000 RPMs and occasional backfires..:facepalm:

I am assuming it is a rectifier issue as I experienced the same problem on one engine last year which turned out to be a bad rectifier. I am thinking that the high reeves may have shorted the rectifier.

Could a bad rectifier cause the other rectifier on the other engine to go bad?

I will test the rectifiers in the morning but if I need to replace them, I would like to upgrade to the rectifiers used in later model Sea Doo boats.

I have the 278001240 A1BY_1_20140418501913895.jpg

But I want to replace it with the 278001241 s-l1600.jpg
They both have the same connectors.

Has anyone successfully upgraded to the newer rectifier?
 
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I don't think you can substitute them.

If you need help getting OEM parts let me know I get a pretty good discount
 
Just put the same ones back on but buy OEM not China. 18 years is a good stretch, I'll bet the China ones don't last a few years.
 
Just put the same ones back on but buy OEM not China. 18 years is a good stretch, I'll bet the China ones don't last a few years.

These Chinese rectifiers didn’t even get 30 hours but I am not sure it was their fault.

Have you ever had a lean engine runaway on a trailer? I would say the engine was revving between 8 and 10,000 RPMs for a good 20 to 30 seconds with no way to stop it.
 
These Chinese rectifiers didn’t even get 30 hours but I am not sure it was their fault.

Have you ever had a lean engine runaway on a trailer? I would say the engine was revving between 8 and 10,000 RPMs for a good 20 to 30 seconds with no way to stop it.

I'm sure it was the chinese rectifiers fault, that stuff is plain junk. I'd rather used OEM that new China crap on my stuff.

Never had a run away. That being said I do not have the rubber plugs in my air boxes and my chemicals are right on the wall at the edge of my shop door. Fogging oil is only a few feet away, that hopefully would choke it out or at least slow it down.
 
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