# F4 1000S 05 electric/fuel/??? problem - MVAgusta.net
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Old 09-20-2012, 04:27 PM   #1
Majid1000S
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Default F4 1000S 05 electric/fuel/??? problem

Hi everyone! I have been around for a couple of weeks but this is my first post.

A month and half ago I bought a 2005 F4S almost new, well kept, with only 2000 km. Everything on the bike is original, apart from the aluminum fan blades.

A week ago something strange happened to me while riding my MV. I was going on the highway and the bike overheated in a traffic jam. Temp reached 118C, I stopped at a gas station to cool down. I noticed it was running weak, vibrating and sounded a bit like a Ducati. The bike was going on 3 cilinders and making a strange noise.

I decided to continue and the bike was running like shite and vibrating a lot under about 6-7 thousand revs. Once I got over that barrier the bike would run and sound normal. Power normal. About 80 km later the bike would run on 3 cylinders again.

The next morning the bike ran ok for a while, but then started spluttering again. I had the spark plugs changed and the problem appeared again.

Reading old posts, I realize my problem could be EBS related. Any other suggestions what I can do?? Where could I buy the EBS relay??

I hope I can solve this problem to enjoy a few rides before the season is over.

Thanks in advance for your help.

PS. Thanks Joe for the bracket. At least now my radiator wont fall off
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Old 09-20-2012, 06:17 PM   #2
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EBS relay is faulty. You need to purchase them from MV as its not a normal relay.

Relocated the EBS replay away from the source of the heat, ie as far away from the headers as possible.
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Old 09-21-2012, 08:04 AM   #3
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i had the same issue. Alex at GP racing(forum sponsor) has this relay, get it and ride fast!
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Old 09-21-2012, 09:01 AM   #4
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guys this forum always has the answers for the right ?'s. I just started having this problem with the bike a few days ago.. had me in a frenzy.. u think the bike was, i was over-heating.. so i come in this morning to work almost in tears & i log in to the forum BAAMM there it is the answer to my problem. @Majid1000S thanks for the great question.. @minime thanks for getting me back on the road...
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Old 09-21-2012, 11:14 AM   #5
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Thanks everyone for the answers. Is there any store in Europe where I could buy the relay??
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Old 09-21-2012, 11:31 AM   #6
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what causes this to happen mayb i can prevent it for next time???
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Old 09-21-2012, 01:40 PM   #7
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Probably overheating. As minime and other people say, once the relay is replaced it is best to put the black box further away from the radiators, engine and other heat sources.
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Old 09-21-2012, 01:43 PM   #8
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thanks alot. ill make sure to reposition the relay..
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Old 09-22-2012, 04:29 AM   #9
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Majid,

I experienced a similar problem with my 2005 f4. After replacing and relocating the EBS relay, the problem remained. Thinking it was fuel pump/filter related, I took the bike apart. In doing so, I discovered that the air filter was extremely dirty and that there is a air temp/barometric pressure sensor located in the air inlet tube (runs from the front fairing to airbox) on the left side of the bike. This was also very dirty.

Very surprising in that the bike has low mileage, always garaged, etc. I live in the often windy desert in So Cal and apparently the dirt is coming into the garage under the doors. Although I cleaned the injectors, fuel rail, air inlet tubes, air box, air filter, fuel tank, and replaced the plugs, I am certain that it was that sensor that was the key to the problem. As both Cag and Noel advised me at the time, buy the EBS relay because you will need it anyway, especially if it's already been over-heated. When you order the EBS, you should also order the (Duc) brass fuel line fittings described in the other threads. The OEM plastic fittings were undoubtably designed by the same "artisan" who thought it a great idea to place the EBS relay right next to the headers. Due to the age of your bike, you should also order the fuel filter and special in-tank fuel line (fuel submersible) while you are it. You're going to need those too. I bought these items at a NAPA auto parts store. The fuel line comes in a one foot length. Ask Cag or Noel for the fuel filter part # and the ID of the fuel line. You should also buy some quality fuel line clamps. I prefer the Wurth clamps. Rounded edges and the "track" for the worm gear does not cut into the rubber like ordinary clamps. These are German and are OEM on Mercedes and BMW. Well worth the extra $.

It's likely that your problem is the EBS relay and you should relocate it regardless, but if that doesn't do it, check that air temp sensor and your air filter.
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Old 09-27-2012, 10:19 AM   #10
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well i received the EBS relay & ive already cleaned out the fuel filter, fuel lines everything but it seems to keep doing it. what else can cause this malfunction its really aggravating. im worried that this can further damage my motor.. neone with some ideas??
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