97 dt100 ,,120 psi ,,good spark ,,clean cabs ,fuel pump dia,,still hard to start ???

[phone sails]

i have 1997 dt100 ,,compression is 120 ,120,112 ,112 and was told that is good and that it is off like that cause of how the heads where cut??good spark all around just changed spark plugs cleaned the carbs changed fuel pump diaphragm,,water pump kit,,and had the motor decarbed ,,but it is still hard to start once i start it it will crank back on with out a problem,,i gave it a quick shot of starting fluid and it turns right on ,,i was wondering if it was like the evinrude i had were you have to push the key in to choke and if so is there a way to know if the the choke is working ,,or where should i start looking,,,any help would be good

 

[robert graham]

Re: 97 dt100 ,,120 psi ,,good spark ,,clean cabs ,fuel pump dia,,still hard to start

It may have prime start or it may have a choke, either way it needs to be working. The starting procedure should be pump primer bulb until hard, choke or (fully automatic prime start), throttle lever in closed position, crank on motor about 3 seconds, stop for a few seconds, then crank on motor again to try and start it. Don't crank for more than 5 seconds at a time to save battery. The prime start is a solenoid-looking unit on the middle carb with a small plastic lever on it. If it's not prime start then it has a choke which must work. Good Luck!

 

[b-frick]

Re: 97 dt100 ,,120 psi ,,good spark ,,clean cabs ,fuel pump dia,,still hard to start

im having the same issues, im having to advance my throttle for the boat to fire up!!!! was told by machanic that some boats require a higher rpm to get the boat started. this is the first time ive heard of advancing the throttle, but it sure does work....

 

[phone sails]

Re: 97 dt100 ,,120 psi ,,good spark ,,clean cabs ,fuel pump dia,,still hard to start

im having the same issues, im having to advance my throttle for the boat to fire up!!!! was told by machanic that some boats require a higher rpm to get the boat started. this is the first time ive heard of advancing the throttle, but it sure does work....

is that the little screw that i am suppose to use to adjust the idle ,,not really sure how to advance the throttle please explain ,,

 

[99yam40]

Re: 97 dt100 ,,120 psi ,,good spark ,,clean cabs ,fuel pump dia,,still hard to start

Most motors with chokes need to have the fast idle lever raised a little while choking to allow enough air and fuel to reach the cylinders properly when cold starting

 

[b-frick]

Re: 97 dt100 ,,120 psi ,,good spark ,,clean cabs ,fuel pump dia,,still hard to start

no, advancing the throttle is actually increaing motor rpm with out putting your boat in gear. theres a button at the bottom of the throttle handle that needs to be pushed in while increasing the throttle alittle. then go through your starting procedures and see if that helps....good luch