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    wrong

    I take it back. I took the boat out and it was hardly making it on plane. Once, I had to shut off the engine and wait a few, started it back up and tried to plane out and it took a very very long time. Then once I was up on plane, got up to 4500 RPM and it fell back down to 3500 and was stuck...
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    RPMs

    Well, after months of troubleshooting , my issue has changed. I found the inside of the top hose running to the top carb was blocked with some sort of eatin up, yellowish and hard like dried glue. Also plummed fuel line straight to the feul filter under hood , bypassing the cowl quick connect...
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    Carb jets

    Does anyone know where to buy jets for 1987 yamaha 150 pro v carbs?
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    Rodbolt

    Hi Rodbolt, You had mentioned the cowl quick connect and I want to be sure I am understanding what you meant.You said if I was still using it then be aware of the O ring swell on the engine side.I looked at my fuel entry from the 10 micron and I have a quick connect on the tank side of the hose...
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    Carbs

    1987 Yamaha prov 150-I just talked to the tech at Yamaha who did a troubleshoot on my low RPM problem and he said he is confident that there is a blockage.He said he thinks there is a restriction where the fuel line hooks to the carb.Inside the carb on the other side of the nipple is a passage...
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    Cannot get past 2000 rpms

    I have a 87 Yamaha prov 150 and have had this problem since last summer of hesitation at WOT. Until today it was hit or miss, sometimes would run great and other times it would not. Anyway, I took it out today and it would not get past 2000 RPMs. All of the following were done within the...
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    Timing?

    What are the chances of timing being the cause of an intermitent RPM?I am out of money at this point. This problem has drained me for about $500 to date. New fuel pumps. cleaned carbs, water separator, plugs, primer ball and hose. I took my pickup tube out of main tank today and found some...
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    1987 yamaha 150

    I am wondering if some one can tell me what would cause my primer bulb to collapse so bad that it is flat? It all started with me troubleshooting a problem with my RPMs jumping up and down. I have replaced:spark plugs, water separator filter, fuel pumps, rebuilt all three carbs, primer bulb...
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    brainstorm

    Ok guys,I rebuilt the carbs very carefully and Ifeel I did a great job. Did not see any type of gumming or any sign of wear anywhere. They looked great but i at least know they are done and good to go for a while. Here is the deal. My intermitent is still there. What do you think? In...
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    Carb cleaning

    I am in the process of cleaning my carbs off of my 1987 Yamaha pro v 150 and am wondering if i can soak the carb bodies in carb cleaner. I have already soaked andcleaned all of the parts I stripped off of them and am ready to put everything back together. I bought the gumout carb and parts...
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    Rodbolt,advice?

    I already have a thread titled frustrated that goes into more detail about this problem and if you care to read more it will be available. Rodbolt you are the most accurate troubleshooter i have seen to date and really help alot of boaters like me. My Yamaha pro v 150 1987, has been running...
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    frustrated

    anyone know what would cause my 1987 yam Pro-v 150 to bog and surge inconsistantly> at first it was not so bad but latley it was everytime i got up to 4000 RPM and would not let me go any faster like it had a blockage.yesterday it happed ay all speeds and i barely got back to the ramp>HELP PLEASE?
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