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Gee, it was not DFI oil. It was full synthetic Sierra TCW-III, and it was supposed to be blue. As it had no dye, I was concerned that something else might be wrong with it as well. I thought that the OEM of the oil responded to my questions was a positive. They do not sell retail.

I wanted to buy some full synthetic 2 cycle oil (TCW-3) for my speedboat. The boat has a a135HPV6 on it, and I thought maybe the full syn stuff was smoke less. I bought a gallon of it from amazon in Feb. When I opened it in June, it was oil colored (yellow), not blue or green as I had...

The crankcase should not introduce air. Air in the crankcase will decrease the fuel pump's efficiency, as well as screw up the fuel scavenging. I agree with electric john

With the gearcase removed, you can put a garden hose on the water tube and with low pressure (5-7PSI), test the water passages. Water should flow easily out of the 'stat holes. With the 'stats installed, water should flow with up to 10 PSI needed to open the poppit valve. Look under the...

Maybe the axle is not installed straight on the trailer frame? If one side of the leaf springs were mounted further back on the trailer, it would cause tracking issue. Maybe that would cause the wear on the tires? You might measure from the rear of the trailer frame to the axle and see if...

So no choke on that carb? Interesting.

The serial number puts it as a 90s model I would think. Those tend to have lower cowlings that split, and come off horizontally. Look for some 1/4" cap screws in the lower cowling, front and back.

Putting the flex plate on correctly is easy. Eight bolts means 360*/8 = 45* per hole. It should be easy to get the timing within 45*. so set the top piston to top dead center with a screwdriver. Now install the timing belt on the inner flywheel and put the flexplate on and turn it until...

It is always wise to keep the swivel pin well-greased, as the repair is an ugly one.

When she bogs, hit the choke button for 1/8 sec and see if she picks up. If so, it is some sort of fuel delivery issue. If not, maybe an ign issue?

Gee, measure the area where you want the tank. An external fuel fill fitting may give you an idea where it was originally. Now find a aftermarket tank that comes close to fitting. Alternatively, there is a welder near me that makes custom stainless steel fuel tanks. I expect you will...

Does SEI make a replacement for that engine? That would be a good place to start.

Gee, Bud, on my Johnny '98 150HPV6, one needs to move the trailering brace away from the grease fitting on the swivel shaft, to get to the zerk.

If the diaghram in the fuel pump leaks, raw gas will be introduced into the crankcase. You will see it on the water, and it can even cause hydrolock. You might pull off the pulse line and pump the fuel primer bulb and see if she leaks. What oil alarm do you get? A 1990 would have a 3 alarm...

Grab the edge and pull off what you can. Most of the time the mastic is weaker than the carpet base and most of it comes off. Then heat and scrape is in order. There should be a solvent for any residual mastic, likely mineral spirits.

Check the play in the shift linkage. On my Fat-fifty, it was 1/8" movement before the cradle moved. Sometimes new bushings can be fitted.

Gee, I doubt you will need that locking lever. If the PTT will hold the motor when running under load, it will hold it fine when not running. You can use the flip down lock when trailering, if you think that is necessary, but I still think the PTT is up to it easily.

Gee, isn't it easier to lap it on a piece of glass with a piece of sandpaper? Filing flat takes a skill and experience. Wood butchers like me need the flat surface of glass to make it work.

Tachs do not last forever. I would rotate the tach settings to get any corrosion off of them. Tachs run off the raw AC stator voltage. You can therefore connect them as such. VRs usually have a grey tach feed, which is just the raw AC voltage from the stator. Disconnect the rectifier...

Gee, is PL adhesive rated for water intrusion? If so, it is just as good as poly resin.