blue smoke - SV650.org

13-08-10, 03:14 PM

okay people, pointy me in the right direction. on way home from work heard a bit of a clunk and thought oh oh. pulled over, engine seems fine, ticking over nicely, nothing out of the ordinary, then i notice a hint of blue smoke and my heart sank. revved it a little and a plume bellowed out.
i was planning on a trade-in, but thats now in doubt.

13-08-10, 03:24 PM

Blue smoke is never good.

Best case scenario is the oil is coming from the engine breather back into the air box, but that's unliklely.

Something in the top end isn't happy. Stripdown is probably the term going to be used.

C

Sid Squid · 13-08-10, 03:27 PM

Sadly the above advice is probably true. I'd do a compression test first, it could possibly save unnecessary work.

13-08-10, 03:40 PM

i know its friday the 13th so i dont need frightening anymore. do you think its worth floggin on ebay as a whole bike as spending money on it is not an option that interests me in the slightest.

yorkie_chris · 13-08-10, 03:49 PM

You will lose money on it either way

15-08-10, 04:15 PM

carried out a compression test sid squid, as you advised, and discovered both pots were 115psi and 120psi. dropped a little oil in each chamber and got 220psi and 225psi so its the pistons and barrells etc.
decided to scrap bike which has broken my heart

but will use it as an excuse to invest in something with a little more kick.
thanks again people for your thoughts.

15-08-10, 06:05 PM

What is the compression range for a good engine? They seem pretty high for a scrapper.

C

yorkie_chris · 15-08-10, 06:31 PM

The difference there suggests somethings f*ed.

However, used pistons and barrels are cheap... lots of engines blown their big ends and left rest of it unscathed. Easy fix

15-08-10, 07:43 PM

Quote:

Originally Posted by yorkie_chris

The difference there suggests somethings f*ed.

not one to mix your words are you chris.

13-08-10, 03:14 PM	#1
Gene genie Guest Posts: n/a	blue smoke okay people, pointy me in the right direction. on way home from work heard a bit of a clunk and thought oh oh. pulled over, engine seems fine, ticking over nicely, nothing out of the ordinary, then i notice a hint of blue smoke and my heart sank. revved it a little and a plume bellowed out. i was planning on a trade-in, but thats now in doubt.

13-08-10, 03:24 PM	#2
Berlin Guest Posts: n/a	Re: blue smoke Blue smoke is never good. Best case scenario is the oil is coming from the engine breather back into the air box, but that's unliklely. Something in the top end isn't happy. Stripdown is probably the term going to be used. C

13-08-10, 03:27 PM	#3
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: blue smoke Sadly the above advice is probably true. I'd do a compression test first, it could possibly save unnecessary work. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

13-08-10, 03:40 PM	#4
Gene genie Guest Posts: n/a	Re: blue smoke i know its friday the 13th so i dont need frightening anymore. do you think its worth floggin on ebay as a whole bike as spending money on it is not an option that interests me in the slightest.

13-08-10, 03:49 PM	#5
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: blue smoke You will lose money on it either way __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

15-08-10, 04:15 PM	#6
Gene genie Guest Posts: n/a	Re: blue smoke carried out a compression test sid squid, as you advised, and discovered both pots were 115psi and 120psi. dropped a little oil in each chamber and got 220psi and 225psi so its the pistons and barrells etc. decided to scrap bike which has broken my heart but will use it as an excuse to invest in something with a little more kick. thanks again people for your thoughts.

15-08-10, 06:05 PM	#7
Berlin Guest Posts: n/a	Re: blue smoke What is the compression range for a good engine? They seem pretty high for a scrapper. C

15-08-10, 06:31 PM	#8
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: blue smoke The difference there suggests somethings f*ed. However, used pistons and barrels are cheap... lots of engines blown their big ends and left rest of it unscathed. Easy fix __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

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