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| EFI starting time http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=68871 |
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| Author: | waterfowler9 [ Mon Nov 07, 2016 7:19 pm ] |
| Post subject: | EFI starting time |
I have a MB 37 EFI and I feel it takes a longer to start than it should. My fuel take is located up front under the deck. Is this a common problem with gas tanks located in the front of the boat? I understand the fuel pump may have to suck quite a bite before it is primed. It starts a little better but not much more after it has been running for awhile. Motor runs great and ideals fine so I am confident it has nothing to do with the fuel pump. This is my first mud motor so I have little experience with them or Mud buddy, but My buddys carbed pro drive fires right up as soon as the key is turned over. I went from a carbed mercury 3 cylinder 2 stoke that would fire by just looking at the key once the primer ball was firm. |
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| Author: | SETx Longtail [ Tue Nov 08, 2016 12:08 am ] |
| Post subject: | Re: EFI starting time |
Why not try turning on the key and allowing the lift pump time to prime before cranking? That's how I've always done mine and it starts every time in just a couple revolutions. When it's warm, even faster. Takes maybe a second or so for the pump to prime. Easy. |
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| Author: | stualaska [ Tue Nov 08, 2016 12:28 am ] |
| Post subject: | Re: EFI starting time |
It has to turn over at least twice for the ECU to decide when to fire. How many revolutions does it turn before it starts? |
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| Author: | strobie22 [ Tue Nov 08, 2016 8:17 am ] |
| Post subject: | Re: EFI starting time |
Try disconnecting the low oil pressure sending unit.. See if it starts any better... |
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| Author: | waterfowler9 [ Tue Nov 08, 2016 7:53 pm ] |
| Post subject: | Re: EFI starting time |
on a cold start it probably takes 10 seconds or longer to start. |
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| Author: | MaXXis85 [ Wed Nov 09, 2016 7:16 am ] |
| Post subject: | Re: EFI starting time |
Stu is correct. I would start simple and check all your fuel line connections from the filter at the lift pump to the tank. |
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| Author: | petrel [ Thu Nov 10, 2016 6:29 am ] |
| Post subject: | Re: EFI starting time |
I believe mine starts quicker if it let it prime up and stop before turning it over. After that maybe 3-4 revolutions to start. Once hot, starting seems almost instantaneous. |
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| Author: | MaXXis85 [ Thu Nov 10, 2016 6:40 am ] |
| Post subject: | Re: EFI starting time |
It is always good to allow the rail to prime before cranking the engine. It only take 2 seconds. |
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| Author: | waterfowler9 [ Sat Nov 12, 2016 11:50 am ] |
| Post subject: | Re: EFI starting time |
sounds good fellas, I will try try that. I am usually in to big of a hurry and just want to crank it and go. |
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