Perkins 4108 Possible problem?

[CalicoJack]

Our 4108 has always started after just a few seconds of cranking, whether it be hot or cold, providing the heat position is used, however, since our return to the water following our 6 week in the yard its become more difficult. It now requires much greater use of the heat position and two or three attempts to start. Even when hot it still requires two or three attempts, although no heat. When it does fire it seems to be running on only two or three cylinders for a couple of seconds, before settling down and running smoothly. Once going its fine, no smoke and no burning oil.

Is it my paranoia or is it starting to develop a problem?

Thanks for the advice,

Nigel

 

[sailorman]

Our 4108 has always started after just a few seconds of cranking, whether it be hot or cold, providing the heat position is used, however, since our return to the water following our 6 week in the yard its become more difficult. It now requires much greater use of the heat position and two or three attempts to start. Even when hot it still requires two or three attempts, although no heat. When it does fire it seems to be running on only two or three cylinders for a couple of seconds, before settling down and running smoothly. Once going its fine, no smoke and no burning oil.

Is it my paranoia or is it starting to develop a problem?

Thanks for the advice,

Nigel

is the "Flame thrower" working properly

 

[CalicoJack]

Yes the "Flame thrower" seems to be fine. I don't use it when its hot.

 

[Bobobolinsky]

Could be air leaking in, is it a short return or tank return?

 

[oceanpilgrim]

have you changed the fuel fillters ?,sounds like air leak, If you have check the top o ring is in the grove and ok,
or could be a split in the copper washer in the suction side

 

[CalicoJack]

Update

Thanks for all the advice. After much searching and trials of different ideas the problem seems to have been with number 3 injector. Replacing, with a new spare one that I carry on board, solved the problem and good starting was the norm again. I have never had the injectors serviced since I brought the boat eight years ago, so the plan in the next few weeks to have them all out and serviced.

Nigel

 

[uxb]

The 4108 I had on my last boat was a gem of an engine. no problems in 15 years- always started and ran like a sewing machine..

 

[ukmctc]

fantastic engine, one of the best ever designed. have your injectors exchanged place in Colchester is cheap and as I remember will post if required.