carbon footprint
Cadet
- Joined
- Nov 26, 2009
- Messages
- 6
Hi,
I'm having trouble starting a Johnson 115hp (J115TLCIM). It turns over fine, but isn't firing at all - I've changed the spark-plugs, as the old ones were fairly oil-covered and black, and am using two new (88Ah / 380CCA) batteries in parallel, have new fuel in the tank, have cleaned the first fuel-filter, but not inspected the round, gauze filter apparently fitted at the fuel-pump, as my pump doesn't look like the one in the manual I've got and would require more disassembly to inspect than I'm happy to do straight away. I've turned the engine over with one plug out and it's giving what looks like a reasonable spark to me.
The fuel system pressurises OK using the hand-bulb at the fuel-tank, but when I turn the engine over on the starter, if I push in the key to activate the primer solenoid, fuel squirts out around the solenoid manual/run lever, about twenty cm or so into the air! From this, I'm guessing that the fuel-pump is making good pressure(!), but a seal or something has failed in the primer solenoid.
To my eye, it looks like there's some sort of air-lock at the first fuel-filter, as the semi-opaque plastic housing doesn't fill with fuel to the top, even when the tank hand-bulb becomes firm, but I guess fuel's obviously getting to the pump and beyond, just not into the cylinders.
As this is such an old engine (1981), none of my local chandlers/boat yards are interested in offering any advice - any help you can offer me here, then, will be very much appreciated...
Thanks very much,
Paul
I'm having trouble starting a Johnson 115hp (J115TLCIM). It turns over fine, but isn't firing at all - I've changed the spark-plugs, as the old ones were fairly oil-covered and black, and am using two new (88Ah / 380CCA) batteries in parallel, have new fuel in the tank, have cleaned the first fuel-filter, but not inspected the round, gauze filter apparently fitted at the fuel-pump, as my pump doesn't look like the one in the manual I've got and would require more disassembly to inspect than I'm happy to do straight away. I've turned the engine over with one plug out and it's giving what looks like a reasonable spark to me.
The fuel system pressurises OK using the hand-bulb at the fuel-tank, but when I turn the engine over on the starter, if I push in the key to activate the primer solenoid, fuel squirts out around the solenoid manual/run lever, about twenty cm or so into the air! From this, I'm guessing that the fuel-pump is making good pressure(!), but a seal or something has failed in the primer solenoid.
To my eye, it looks like there's some sort of air-lock at the first fuel-filter, as the semi-opaque plastic housing doesn't fill with fuel to the top, even when the tank hand-bulb becomes firm, but I guess fuel's obviously getting to the pump and beyond, just not into the cylinders.
As this is such an old engine (1981), none of my local chandlers/boat yards are interested in offering any advice - any help you can offer me here, then, will be very much appreciated...
Thanks very much,
Paul