2007 5.0 Vaporlock? Wont start after engine sits after being ran? Fed up. HELP!

patrickm553

Recruit
Joined
May 28, 2012
Messages
2
Hey guys. New to this website/thread posting deal. I have a 2007 Larson LXi 228. Love the boat, however yesterday we went out on the lake for the first time this year. We ran maybe 20 minutes at about 40mph, then idled another 15minutes back to the party cove. We swam for 4-5 hours. Got back in the boat and had to crank on it to get it to start, it almost killed the battery. This has happened numerous times last year and I took it to the dealer only to have them tell me that they didnt find anything wrong with it. They also told me to "leave the sundeck open whenwe were parked". Like anyone wants to do that. I have tried starting it in fast idle but this seems to make it worse. I can smell fuel when I tried this. After this happened last year, I got in the water only to find a lot of black soot stuck around the waterline by the motor. I assume this was because when the boat started it was so rich with fuel that it produced this soot like stuff. I need some advice, ths boat is still under warrranty, but I do not know who to take it to. You can see what I got from the dealer where I bought the boat. Any help is great. Thanks
 

2003lsr

Seaman Apprentice
Joined
Apr 10, 2011
Messages
39
Re: 2007 5.0 Vaporlock? Wont start after engine sits after being ran? Fed up. HELP

Patrick, humor me and remove the gas cap next time it fails to start. Just remove it, reinstall it, then try to crank the motor. Could be as simple as a vacuum lock. I usually remove gas cap, then jump the relay to the fuel pump for about 5-10 seconds when my 4.3GL-C acts up like yours. Worked last year for me, and also yesterday.
 

patrickm553

Recruit
Joined
May 28, 2012
Messages
2
Re: 2007 5.0 Vaporlock? Wont start after engine sits after being ran? Fed up. HELP

Thanks for the advice. I am also going to take my fuel pressure gauge next time to see if it has the correct fuel pressure when I try and start it. Just fed up b/c this thing is under warranty, should not have to spend my time working on it. Thanks again. Ill post how it works out. Might try and recreate it in the driveway.
 

tomasz

Petty Officer 3rd Class
Joined
Jul 4, 2012
Messages
87
Re: 2007 5.0 Vaporlock? Wont start after engine sits after being ran? Fed up. HELP

Hey guys. New to this website/thread posting deal. I have a 2007 Larson LXi 228. Love the boat, however yesterday we went out on the lake for the first time this year. We ran maybe 20 minutes at about 40mph, then idled another 15minutes back to the party cove. We swam for 4-5 hours. Got back in the boat and had to crank on it to get it to start, it almost killed the battery. This has happened numerous times last year and I took it to the dealer only to have them tell me that they didnt find anything wrong with it. They also told me to "leave the sundeck open whenwe were parked". Like anyone wants to do that. I have tried starting it in fast idle but this seems to make it worse. I can smell fuel when I tried this. After this happened last year, I got in the water only to find a lot of black soot stuck around the waterline by the motor. I assume this was because when the boat started it was so rich with fuel that it produced this soot like stuff. I need some advice, ths boat is still under warrranty, but I do not know who to take it to. You can see what I got from the dealer where I bought the boat. Any help is great. Thanks

I got the same issue on my 2007 Monterey 214 FS, matter a fact it had happen to me today. However, my boat starts and runs for like 5 to 10 sec then rpm drops down. It happens for another 4 to 7 times and then it starts and rpms stay on approx 800. I will have try with gas cap off next time. I thought I was the only one with this issue.
 
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