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Old 20 June 2014, 18:31   #1
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New Etec 90

Quite pleased so far ... has a bit of a weird area about 3000 rpm where it sounds like it misses, but it doesen't , cos there is still power ? and it throttles up no problem and back down to idle.

Economy is good, and no shortage of 2 stroke grunt. We can cruise around most of the afternoon on 3-4 gallons at cruising speed .. .. I know thats not very scientific but its better than the 75 it replaced and we dont need WOT for decent speeds

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Old 21 June 2014, 04:57   #2
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Quite pleased so far ... has a bit of a weird area about 3000 rpm where it sounds like it misses, but it doesen't , cos there is still power ? and it throttles up no problem and back down to idle.

Economy is good, and no shortage of 2 stroke grunt. We can cruise around most of the afternoon on 3-4 gallons at cruising speed .. .. I know thats not very scientific but its better than the 75 it replaced and we dont need WOT for decent speeds

Old and New below

photos dont show the right way up on this 'inferior' forum
Are you sure the "weird" area is at 3000rpm? It's normally around 2000, it's as the engine switches from Stratified to Homogenous burn, which is a trick it uses to reduce fuel consumption & emissions at low revs.
Also, you might want to start adding around an eggcup full of oil to each 20l/5gal of fuel, this increases the lubricity of the fuel & can help prevent injector problems (one of the weak spots of the Etec imho) The increasing amounts of ethanol make the fuel "dry" & can cause the injectors to overheat in extreme cases of long runs at high revs.
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Old 21 June 2014, 13:32   #3
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Are you sure the "weird" area is at 3000rpm? It's normally around 2000, it's as the engine switches from Stratified to Homogenous burn, which is a trick it uses to reduce fuel consumption & emissions at low revs.
Also, you might want to start adding around an eggcup full of oil to each 20l/5gal of fuel, this increases the lubricity of the fuel & can help prevent injector problems (one of the weak spots of the Etec imho) The increasing amounts of ethanol make the fuel "dry" & can cause the injectors to overheat in extreme cases of long runs at high revs.
You could be right ... it might just be over 2000 actually , and what you describe could certainly be what I'm hearing. I noticed no change in power or pick up, so I know its not a problem, its just they way it 'sounds' thanks for the info PD ... Is adding oil a lifetime thing or just now and again ? and I assume that will be XD100 ? (which smells of urea I found quite intriguing ... is that the outboard equivalent of add blue?)
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Old 21 June 2014, 19:25   #4
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Re: the oil, its a life time thing but not the end of the world if you forget now & then. I use XD100 'cos that's what I've got, but you could use any TCW3 oil just to increase the lubricity. Yup the XD100 does smell of p155 Adding a drop of oil to the fuel goes for any DI engine, not just etecs imho, 2 or 4 stroke, it helps to lubricate the injectors.
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Old 22 June 2014, 03:47   #5
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Re: the oil, its a life time thing but not the end of the world if you forget now & then. I use XD100 'cos that's what I've got, but you could use any TCW3 oil just to increase the lubricity. Yup the XD100 does smell of p155 Adding a drop of oil to the fuel goes for any DI engine, not just etecs imho, 2 or 4 stroke, it helps to lubricate the injectors.


Aye I stick it in my diesel now & then for the same reason
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Old 22 June 2014, 05:45   #6
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Also, you might want to start adding around an eggcup full of oil to each 20l/5gal of fuel, this increases the lubricity of the fuel & can help prevent injector problems (one of the weak spots of the Etec imho) The increasing amounts of ethanol make the fuel "dry" & can cause the injectors to overheat in extreme cases of long runs at high revs.
Perhaps I should start doing also! I've never added anything to my fuel before, is this something that BRP recommends or just a tip from the forums?
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Old 22 June 2014, 06:24   #7
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Perhaps I should start doing also! I've never added anything to my fuel before, is this something that BRP recommends or just a tip from the forums?
It's not official BRP advice, it came from a main dealer after I had an injector fail. It can't hurt & can only help.
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Old 22 June 2014, 08:40   #8
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Nothing official from BRP, I had to replace an injector on one of my engines, & the dealer advised me to do it.


.....sh1t happens.......
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Old 22 June 2014, 15:42   #9
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Bit confusing as to why though ... so are there moving parts in a modern petrol injector ?
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Old 22 June 2014, 16:41   #10
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Bit confusing as to why though ... so are there moving parts in a modern petrol injector ?

Gives extra lube to pump and injectors
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