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#1
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just put a 45 slice on the pickup, I've also seen people drill a hole in the side right at the bottom of the pickup, anything to prevent it sucking to the bottom of the tank or creating a restriction that will prevent the fuel from being sucked up the pickup. Its a common problem with plastic tanks, i guess if the aluminum tank you have has enough flex in the top and bottom, it could do the same. I thought about the E10 solution, but figured acetone would be faster, just pour some in(couple gallons), hook the boat to the truck, drive around town stopping and starting, getting the acetone to slosh around. Pump the stuff out, take a look with the bore scope, once you're satisfied with it, pour a couple of gallons of gas in it, drive it around, then pump that out. While you're at it, go to the auto parts store, buy a cheap vacuum gauge and a hose tee, install it at the fuel tank in line withe the fuel hose. Go run the boat, if the gauge reads more than 2" hg, the problem is in the tank, if it reads less than 2" hg, move to to the spin on filter, then recheck, keep moving the gauge till you find the point that has the high vacuum reading, Thats the point of your restriction. Has the VST been cleaned thru all of this?
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#2
11-23-2011, 10:47 AM
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i definitely agree w spare about the e-10 being SLOW.... I was more looking at it as the secondary cause rather than the solution
Spare, do you think the acetone would damage his fuel sending unit? might need to make up a temporary delete plate to put on while cleaning. Probably need at least 10 gallons in there. Definitely test with a vacuum gauge. Simple and effective.
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#3
11-24-2011, 06:09 PM
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I would not completely toss the idea of an elecr=trical problem...my 200 was surging exactly as you describe...we put a new power pack on and cleared it up completely...if a fuel issue is not apparent, take a close look at the Power pack..
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha 
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#4
11-24-2011, 06:12 PM
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I would not completely toss the idea of an elecrtrical problem...my 200 was surging exactly as you describe...we put a new power pack on and cleared it up completely...if a fuel issue is not apparent, take a close look at the Power pack...
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha
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#5
11-24-2011, 06:34 PM
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didn't think about the sender, pull it out, that way you can see what you're cleaning out
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