Nismo400r
Cadet
- Joined
- Jun 25, 2014
- Messages
- 6
The reason i am posting this, is because i found 20 different forums with the same issue and the last post was always the same "taking it to the shop tomorrow"..
So lets start with the boat...
I own a 95 Regal Xp with a Mercury 120 Sport Jet.
And the problem....
I ran this boat two weeks before i bought it off a friend and it ran great, then after i purchased the boat i trailered it an hour to my house and it would not start.
So the first thing i checked was each spark plug had great spark (bright blue spark) so since i had the spark plugs pulled, i checked compression and it was solid on all 4 cylinders.
Next up was the timing, and the spark plugs were igniting at top dead center (piston at it's upmost position).
Last i checked the fuel and i could smell the fuel coming out but it was still not starting...
So i pulled the boat off the lake, removed the plugs again and turned the engine for a couple seconds to blow out all the fluid in the engine and ran it out of the bilge.
When we removed the bowls we noticed some junk in the bowls so we flushed the fuel lines and more junk came out each time until finally the bowls were clean and so was the fuel filter, however the vacuum tube for the fuel hooked up to the air box was plugged so we cleaned that out as well and yet still no start.....
When i say "no start" i mean this engine was turning over strong and not giving us a single spudder.....
The last time we removed the bowls we took a mirror and noticed the top carb needle was closed tight, no mater what we did with the float and the bottom was stuck open which is why the engine was flooding (each time we removed the spark plugs, you could see fuel on the lower two plugs).
After we sprayed some starter fluid in the cylinders and worked the floats over and over by hand, the needles freed up and we were getting good mixture but STILL NOT STARTING
Finally we used the oldest trick in the book, pulled out the plugs, ran a wire brush on them all, checked the gap (.40) and super heated the plugs with a propane torch while they were sitting in the socket (WARNING!!! DONT BE A MORON AND DO THIS IN THE BOAT), with the plugs hot, we quickly installed them. What this does is, when you turn over the engine and gas hits hot plugs, it turns the gas into a misty vapor which is way easier to ignite then liquid fuel and the engine turned over instantly, and as i have no way of running the engine in my driveway without burning up the water pump or a way to cool the engine we turned it off instantly.
After taking it to the boat launch it started no problem over and over again.
Again, i hope this has helped someone as i exhausted the internet trying to find this info.
So lets start with the boat...
I own a 95 Regal Xp with a Mercury 120 Sport Jet.
And the problem....
I ran this boat two weeks before i bought it off a friend and it ran great, then after i purchased the boat i trailered it an hour to my house and it would not start.
So the first thing i checked was each spark plug had great spark (bright blue spark) so since i had the spark plugs pulled, i checked compression and it was solid on all 4 cylinders.
Next up was the timing, and the spark plugs were igniting at top dead center (piston at it's upmost position).
Last i checked the fuel and i could smell the fuel coming out but it was still not starting...
So i pulled the boat off the lake, removed the plugs again and turned the engine for a couple seconds to blow out all the fluid in the engine and ran it out of the bilge.
When we removed the bowls we noticed some junk in the bowls so we flushed the fuel lines and more junk came out each time until finally the bowls were clean and so was the fuel filter, however the vacuum tube for the fuel hooked up to the air box was plugged so we cleaned that out as well and yet still no start.....
When i say "no start" i mean this engine was turning over strong and not giving us a single spudder.....
The last time we removed the bowls we took a mirror and noticed the top carb needle was closed tight, no mater what we did with the float and the bottom was stuck open which is why the engine was flooding (each time we removed the spark plugs, you could see fuel on the lower two plugs).
After we sprayed some starter fluid in the cylinders and worked the floats over and over by hand, the needles freed up and we were getting good mixture but STILL NOT STARTING
Finally we used the oldest trick in the book, pulled out the plugs, ran a wire brush on them all, checked the gap (.40) and super heated the plugs with a propane torch while they were sitting in the socket (WARNING!!! DONT BE A MORON AND DO THIS IN THE BOAT), with the plugs hot, we quickly installed them. What this does is, when you turn over the engine and gas hits hot plugs, it turns the gas into a misty vapor which is way easier to ignite then liquid fuel and the engine turned over instantly, and as i have no way of running the engine in my driveway without burning up the water pump or a way to cool the engine we turned it off instantly.
After taking it to the boat launch it started no problem over and over again.
Again, i hope this has helped someone as i exhausted the internet trying to find this info.
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