SV650 front cylinder failure - SV650.org

27-08-05, 02:58 PM

SV650 front cylinder failure

Just had a look at my neighbours 1999 sv650 said he was having problems with the front cylinder cutting out mostly it was caused by water been thrown at it from the front wheel. When he came to remove the spark plug he found it had corroded in place costing him a lot of cash to get the dealer to fix it. He has now fitted a piece of stainless plate from the bottom of the radiator to the top of the cylinder head. Doesn’t look to bad but I bet it could be improved. I cant put a photo on here to show you.
I will need someone to host it for me.

The question is do others suffer this problem and how did you solve it?

Also if I made something like the stainless plate would you want one?

27-08-05, 03:06 PM

1990 model eh?

This is a common fault and the popular fix is to fit a fender extender to the bottom of the front mudflap. This works very well and stops all the water and crap flying up to the top cylinder head. They cost maybe 15quid off ebay.

Also if you cover the spark plug with some kind of sealent around it that will help any water that does get near it.

Generally the fender extender works pretty damn well, since fixing it ive never had a complaint from the front cylinder.

Richie · 27-08-05, 03:49 PM

Quote:

Originally Posted by falc

1990 model eh?

This is a common fault and the popular fix is to fit a fender extender to the bottom of the front mudflap. This works very well and stops all the water and crap flying up to the top cylinder head. They cost maybe 15quid off ebay.

Also if you cover the spark plug with some kind of sealent around it that will help any water that does get near it.

Generally the fender extender works pretty damn well, since fixing it ive never had a complaint from the front cylinder.

Dito...

embee · 27-08-05, 04:29 PM

yep, fender extenda does 99% of the job.

I also add a little red rubber grease round the plug cap to ward off any water, and just to add belt, braces and string, I made a shield

http://www.thebikereview.com/iup/get8.asp?ID=1116

It's aluminium and fixes on the two lower fan mounts up behind the rad. Don't know how effective it is, but I've had no problems with all 3 things!

27-08-05, 04:30 PM

Quote:

Originally Posted by falc

1990 model eh?

This is a common fault and the popular fix is to fit a fender extender to the bottom of the front mudflap. This works very well and stops all the water and crap flying up to the top cylinder head. They cost maybe 15quid off ebay.

Also if you cover the spark plug with some kind of sealent around it that will help any water that does get near it.

Generally the fender extender works pretty damn well, since fixing it ive never had a complaint from the front cylinder.

is it really only me that has an old curvy and has absolutely no problems in severely bad rain and flooded roads??

Not that Im complaining in the least.

27-08-05, 05:11 PM

ihad awful mis fires in the rain-
fender extender

no probs since- !! in any weather

27-08-05, 06:55 PM

Nah, no leccy problems for me. And I've been out in seriously heavy downpours round here.

However having had a squint up at the front head I'm gonna do something about it soon. It's covered in tarspots and grit. The front carb looks to be covered aswell.

27-08-05, 09:43 PM

I've been doing some reading on the subject and there seems to be a front spark plug DRAIN hole on the RHS of the cylinder. Mione was blocked with gunk until I cleaned it out with some soft flexible wire.
Keep the drain hole clean and fit a fender extender should sort the problems out. Copper grease on the spark plug threads wouldn't hurt either.

28-08-05, 08:21 PM

Quote:

Originally Posted by lynw

Quote:

Originally Posted by falc

1990 model eh?

This is a common fault and the popular fix is to fit a fender extender to the bottom of the front mudflap. This works very well and stops all the water and crap flying up to the top cylinder head. They cost maybe 15quid off ebay.

Also if you cover the spark plug with some kind of sealent around it that will help any water that does get near it.

Generally the fender extender works pretty damn well, since fixing it ive never had a complaint from the front cylinder.

is it really only me that has an old curvy and has absolutely no problems in severely bad rain and flooded roads??

Not that Im complaining in the least.

never had any probs with my curvy or pointies - and yes I do ride in rain!

28-08-05, 08:50 PM

I haven't had any problems riding in the wet either except when my immobiliser / alarm was soaked at Donington this year.

I have noticed though that the front plug is very rusty when i change them, but never had a problem removing it. I think a bit of vaseline around the cap may be wise next time!

Otherwise no problems

27-08-05, 02:58 PM	#1
chewy22 Guest Posts: n/a	SV650 front cylinder failure SV650 front cylinder failure Just had a look at my neighbours 1999 sv650 said he was having problems with the front cylinder cutting out mostly it was caused by water been thrown at it from the front wheel. When he came to remove the spark plug he found it had corroded in place costing him a lot of cash to get the dealer to fix it. He has now fitted a piece of stainless plate from the bottom of the radiator to the top of the cylinder head. Doesn’t look to bad but I bet it could be improved. I cant put a photo on here to show you. I will need someone to host it for me. The question is do others suffer this problem and how did you solve it? Also if I made something like the stainless plate would you want one?

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27-08-05, 03:06 PM	#2
falc Guest Posts: n/a	1990 model eh? This is a common fault and the popular fix is to fit a fender extender to the bottom of the front mudflap. This works very well and stops all the water and crap flying up to the top cylinder head. They cost maybe 15quid off ebay. Also if you cover the spark plug with some kind of sealent around it that will help any water that does get near it. Generally the fender extender works pretty damn well, since fixing it ive never had a complaint from the front cylinder.

27-08-05, 04:29 PM	#4
embee Member Mega Poster Join Date: Jul 2003 Location: Warwickshire Posts: 2,804	yep, fender extenda does 99% of the job. I also add a little red rubber grease round the plug cap to ward off any water, and just to add belt, braces and string, I made a shield http://www.thebikereview.com/iup/get8.asp?ID=1116 It's aluminium and fixes on the two lower fan mounts up behind the rad. Don't know how effective it is, but I've had no problems with all 3 things!

27-08-05, 05:11 PM	#6
Quiff Wichard Guest Posts: n/a	ihad awful mis fires in the rain- fender extender no probs since- !! in any weather

27-08-05, 06:55 PM	#7
haggis Guest Posts: n/a	Nah, no leccy problems for me. And I've been out in seriously heavy downpours round here. However having had a squint up at the front head I'm gonna do something about it soon. It's covered in tarspots and grit. The front carb looks to be covered aswell.

27-08-05, 09:43 PM	#8
BURNER Guest Posts: n/a	I've been doing some reading on the subject and there seems to be a front spark plug DRAIN hole on the RHS of the cylinder. Mione was blocked with gunk until I cleaned it out with some soft flexible wire. Keep the drain hole clean and fit a fender extender should sort the problems out. Copper grease on the spark plug threads wouldn't hurt either.

28-08-05, 08:50 PM	#10
wheelnut Guest Posts: n/a	I haven't had any problems riding in the wet either except when my immobiliser / alarm was soaked at Donington this year. I have noticed though that the front plug is very rusty when i change them, but never had a problem removing it. I think a bit of vaseline around the cap may be wise next time! Otherwise no problems