So, my 1974 Evinrude 9.9 HP has re-captured my confidence after a simple plug change eliminated the tendency for one cylinder to drop at slow speeds.
Yesterday, it seemed that the problem (or some problem) was returning in that the engine would run erratically or just stall out at anything other than full speed. Starting was hard, also . . . it actually acted as if it had run out of fuel. So, I tried using the choke and then tried squeezing the fuel line primer bulb.
Sure enough, that bulb felt as though the tank had run out of gas, and, if I squeezed more than four times or so, fuel would begin to escape from the fittings at the tank and the engine.
It seemed obvious to me that this leakage was causing my problem, allowing fuel to escape from the line when under pressure and allowing air to take its place.
As long as I would pump that bulb intermittently to keep fuel flowing, the engine ran fine at all speeds.
I assume that I need to buy a new fuel hose with fittings (or should I look for the fittings only?).
My question: Is it normal for these fittings to wear out? This fuel hose was part of the OEM kit for my '04 Bombadier/Evinrude 25 HP motor, so, to me at least, it's not all that old. I don't remember ever having to replace a fuel hose for this reason. I've have seen more than one hose where the rubber (or whatever it's made of) gets so stiff that you could not even squeeze the primer bulb, but I've never had a fitting go bad. Now, it seems that both fittings are bad.
Does that make sense, or am I missing something?
Caruso
Yesterday, it seemed that the problem (or some problem) was returning in that the engine would run erratically or just stall out at anything other than full speed. Starting was hard, also . . . it actually acted as if it had run out of fuel. So, I tried using the choke and then tried squeezing the fuel line primer bulb.
Sure enough, that bulb felt as though the tank had run out of gas, and, if I squeezed more than four times or so, fuel would begin to escape from the fittings at the tank and the engine.
It seemed obvious to me that this leakage was causing my problem, allowing fuel to escape from the line when under pressure and allowing air to take its place.
As long as I would pump that bulb intermittently to keep fuel flowing, the engine ran fine at all speeds.
I assume that I need to buy a new fuel hose with fittings (or should I look for the fittings only?).
My question: Is it normal for these fittings to wear out? This fuel hose was part of the OEM kit for my '04 Bombadier/Evinrude 25 HP motor, so, to me at least, it's not all that old. I don't remember ever having to replace a fuel hose for this reason. I've have seen more than one hose where the rubber (or whatever it's made of) gets so stiff that you could not even squeeze the primer bulb, but I've never had a fitting go bad. Now, it seems that both fittings are bad.
Does that make sense, or am I missing something?
Caruso
