too much fuel?

[Chris_B]

I have an '01 carb'd Outback. It had about 160 hours on it when I bought it around July. It ran good (except for some "loping" at idle occasionally), but I replaced the fuel filter and it ran better. I stopped using it at summer's end, but took it out again around October. It blew smoke out terribly and ran like crap. I brought it home and it ran fine in the driveway, so I just assumed that the choke had malfunctioned.

Now, I took it out again for the first time since October. It is smoking even more (definitely running rich - not oil or water). The idle is extremely rough and often times needs some extra throttle just too start. Reading over earlier posts, I now believe that the rough idle I experienced over the summer was due to the fuel/air mixture adjustment. However, the screws are at exactly 1-1/2 turns each side - so that isn't the cause of my terrible problem now.

I'm thinking that the problem might be debris in the needle valve or a stuck float. Any other thoughts?

I also read on an earlier post that the Holley 4150 was bronze/brown. I believe that mine is the 4150 rather than the 4010, but it is silver. Is this it indeed a 4150?

Thanks,
Chris

[RYAN]

CHRIS
I had a similar problem last year, I found water in the carb and in the fuel tank. The o ring on the gas cap was bad. I replaced the ring, changed the fuel filter, drained the tank and bought a carb rebuild kit from the part store for about 30 bucks. After all that I still had the problem. I took it to my mechanic and he found that the engine timing was off and a small piece of debris was in the carb which made that boat run richer. Also I replaced the spark plugs a lot, it helped me a lot during the year.
It’s hard for me to narrow it down to your problem because mine had so many of them. The best advice I can give you is to start with the cheap stuff first then move up... hope this helps

[Chris_B]

I could see water in the gas causing the sputtering and loping that I experienced before the recent "way too rich" problem. I would buy the debris in the carb, a stuck needle valve, a stuck float, or some other carb-specific issue as the current cause of my problem. Another thought is that a stuck choke initially may have fouled the plugs which has now exacerbated the problem. Does that seem plausible?

As far as the timing, I was under the impression that it couldn't be adjusted manually, but rather had to be adjusted via the computer. Is that correct?

What carb is actually on the '01 Indmar?

[RYAN]

After dealing with mine, everything is possible with the carb. Once water got in to the fuel system all hell broke loose. From what you described maybe a good cleaning of the carb and new spark plugs may do the trick. If you don’t feel comfortable working or rebulding it, just take it in and have a professional do it, mine was around 100-200 bucks.
"As far as the timing, I was under the impression that it couldn't be adjusted manually, but rather had to be adjusted via the computer. Is that correct?"
To answer your question; looking back on my original post I probably shouldn’t have put it in their but my timing was ten degrees off which made a big difference. From what ive learned the timing doesn’t need to be adjusted that often and it’s not normally a problem that just comes out of no where. You can adjust it manually but for you to get the timing correct it requires timing light not a computer, most new cars etc do require a computer.
As to the correct carb, im unsure, I got to snooping around on one of the old manuals on this web site and found what mine was suppose to be. I’m sure a few Moomba readers should help you out , let me know how it goes.

[Chris_B]

regarding timing, reference this page https://forum.moomba.com/showthread.php?t=37&highlight=setting+timing I'll check the timing this weekend using this method and replace the plugs, but I'm fairly certain it's a fuel issue. I just wish I knew whether it was a 4150 or a 4010 to order the carb kit.

Interestingly, the shop manual says that it cannot be done w/o an adapter to set the electronic timing control module to base mode.

[Brian Raymond]

The 4010 is silver in color and has either phillips or torx screws that mount the top to the body. The 4150 is bronze in color and has (4) 5/16" bolts that mount the primary and secondary bowls to the body. Hope this helps, keep us posted. Brian Raymond