I have been trouble shooting for a few weekends now and need some help.
About 50% of the time when I am trying to pull a skier I have no hole shot. The other 50% of the time it runs great.
The boat gets to about 1500 rpm and no more. If I keep pushing the throttle it will die.
If I push in the choke for a second while it is struggling to get on plane, it will start to accelerate and get on plane and then run to WOT.
Thanks for any ideas.
History:
Boat came from CA and was jetted for sea level. I rebuilt the carbs for 5000' and also put in a set of reeds. I live in CO
I have rebuilt the fuel pump. Good Compression.
I removed the timing advance module thinking that was the problem. So set I set the WOT timing to 20 degrees. (The merc manual says 18 for a 175 and then I added 2). It idles in gear at constant 800 rpm.
I have link and synced the carbs several times with the merc manual.
New gas, new fuel lines, new filters.
I have tried both a 17p and 19p high five props.
Yesterday the 17p prop was on and when I was trying to barefoot the boat would not get on plane. I would get in the boat we get it to run with pushing the choke, I would jump back in water and then it would be fine. The 17p is about 4200 rpm at WOT, seems low to me.
Currently the 19p is on it with 4 of the 5 PVS plugs removed. It hooks up well when the motor runs. With the 19p I am about 3900 rpm at WOT
About 50% of the time when I am trying to pull a skier I have no hole shot. The other 50% of the time it runs great.
The boat gets to about 1500 rpm and no more. If I keep pushing the throttle it will die.
If I push in the choke for a second while it is struggling to get on plane, it will start to accelerate and get on plane and then run to WOT.
Thanks for any ideas.
History:
Boat came from CA and was jetted for sea level. I rebuilt the carbs for 5000' and also put in a set of reeds. I live in CO
I have rebuilt the fuel pump. Good Compression.
I removed the timing advance module thinking that was the problem. So set I set the WOT timing to 20 degrees. (The merc manual says 18 for a 175 and then I added 2). It idles in gear at constant 800 rpm.
I have link and synced the carbs several times with the merc manual.
New gas, new fuel lines, new filters.
I have tried both a 17p and 19p high five props.
Yesterday the 17p prop was on and when I was trying to barefoot the boat would not get on plane. I would get in the boat we get it to run with pushing the choke, I would jump back in water and then it would be fine. The 17p is about 4200 rpm at WOT, seems low to me.
Currently the 19p is on it with 4 of the 5 PVS plugs removed. It hooks up well when the motor runs. With the 19p I am about 3900 rpm at WOT
