I have a 1998 150 EFI that was just rebuilt. I did break in period of about 40 gallons at 25:1 mixture. Now I am running a second tank of about 40:1 mixture.
My problem is that it runs very rough at idle while under load. Meaning at idle in neutral it sounds great, any speed above 5mph is great but in that first movement, trolling speed it runs rough, sounds like it is going to stall (it doesnt thought)
My mechanic said that this is normal for a break in period and to wait until I run 4-5 tanks through it before bringing it in. Just curious if this this sounds normal to anyone as you never like to hear your new motor sound bad.
Thanks
My problem is that it runs very rough at idle while under load. Meaning at idle in neutral it sounds great, any speed above 5mph is great but in that first movement, trolling speed it runs rough, sounds like it is going to stall (it doesnt thought)
My mechanic said that this is normal for a break in period and to wait until I run 4-5 tanks through it before bringing it in. Just curious if this this sounds normal to anyone as you never like to hear your new motor sound bad.
Thanks