Lifan 250cc WHITE smoke

Kirekire15 · 06-04-2020, 03:17 PM

(FIXED) Lifan 250cc OIL COOLED is smoking allot:

It doesnt get better, worse as you rev it.

The compression is great

Megadan · 06-04-2020, 04:34 PM

I would be looking at either a leak from the head gasket from the oil supply to the head into the cylinder, maybe really bad valve stem seals, or your rings. Not that many places or ways for oil to get in.

Either that, or you have a jerk for a friend who filled your muffler with WD40. Not that I have any experience ever doing that to a buddy of mine... but it's possible.

Hancadam · 06-04-2020, 06:28 PM

If compression is good, I'd suspect head gasket or valve seal as Dan says.

One thing maybe worth checking is the air filter, see if it got oil soaked by chance.

Kirekire15 · 06-14-2020, 05:40 PM

Quote:

Originally Posted by Megadan

I would be looking at either a leak from the head gasket from the oil supply to the head into the cylinder, maybe really bad valve stem seals, or your rings. Not that many places or ways for oil to get in.

Either that, or you have a jerk for a friend who filled your muffler with WD40. Not that I have any experience ever doing that to a buddy of mine... but it's possible.

fixed read bellow

Kirekire15 · 06-14-2020, 05:42 PM

So i will leave this post up for anyone needing help, i couldnt find zongshen piston rings but the engine is apperently a honda replica so i used original honda piston rings, also changed the valve seals while i was at it, had to reuse gasket because i couldnt find any that would deliver in less than 30 days, the bike doesnt smoke at all, runs like a jap, compression tested at 170psi / 12 bar (250cc). i should mention the piston and cylinder looked brand new, they were white as hell, werent black and burned from use, measurements were 100% good, whoever put the rings used wrong ones i suspect.

06-04-2020, 03:17 PM	#1
Kirekire15 Join Date: Jun 2020 Posts: 3	Lifan 250cc WHITE smoke (FIXED) Lifan 250cc OIL COOLED is smoking allot: It doesnt get better, worse as you rev it. The compression is great Last edited by Kirekire15; 06-14-2020 at 05:44 PM.
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06-04-2020, 04:34 PM	#2
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,030	I would be looking at either a leak from the head gasket from the oil supply to the head into the cylinder, maybe really bad valve stem seals, or your rings. Not that many places or ways for oil to get in. Either that, or you have a jerk for a friend who filled your muffler with WD40. Not that I have any experience ever doing that to a buddy of mine... but it's possible. __________________ Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124
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06-04-2020, 06:28 PM	#3
Hancadam Join Date: Nov 2007 Location: Tennessee Posts: 201	If compression is good, I'd suspect head gasket or valve seal as Dan says. One thing maybe worth checking is the air filter, see if it got oil soaked by chance.
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06-14-2020, 05:42 PM	#5
Kirekire15 Join Date: Jun 2020 Posts: 3	So i will leave this post up for anyone needing help, i couldnt find zongshen piston rings but the engine is apperently a honda replica so i used original honda piston rings, also changed the valve seals while i was at it, had to reuse gasket because i couldnt find any that would deliver in less than 30 days, the bike doesnt smoke at all, runs like a jap, compression tested at 170psi / 12 bar (250cc). i should mention the piston and cylinder looked brand new, they were white as hell, werent black and burned from use, measurements were 100% good, whoever put the rings used wrong ones i suspect.
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