Engine Oil and White Smoke

ws450r · 09-21-2012, 08:38 PM

Can to much engine oil cause white smoke to come from the exhaust.

The reason I ask, obviously I have or had some. Started it up last Saturday, had some smoke when I popped the throttle. Read on here could be coolant, head gasket, ect. Talked to a buddy of mine, he said it sounds more like valve guides.

I let it sit all week and changed engine and tranny oil tonight for the first time since I bought it (only 1 two hour race ride time in that period). The previous owner had so much oil in it, you couldn't see a "line" in the sight glass. Filled it up to H, let it run for 3-4 minutes, let it settle, then put a little more oil in it, let it run, let it sit. Now after letting cool all the way down, the "line" is almost to the H, so about right.

After filling everything, I let it warm up, popped the throttle, basically did everything that I did last weekend to get the smoke. But tonight, I didn't get any after that time.

Like I asked earlier, just wondering if all the oil that was in it would cause the white smoke.

primos97hunter · 09-21-2012, 08:44 PM

Im sure it could. Maybe pushing through the rings into the combustion chamber. Not even mentioning it could blow gaskets..

pwalston25 · 09-21-2012, 08:47 PM

sometimes when they are cold and you have the choke on they smoke a very little bit. is that what happened the first time? I dont think having too much oil would cause it to do that. Usually the extra oil ends up coming out the vent tube anyway

ws450r · 09-21-2012, 08:56 PM

No choke on. I did have a bit of dusty oil on the back of the engine after the race, but not anything crazy. The smoke last weekend was a week after the race, and it sat in the garage that entire week without being started, just like between tonight and last weekend.

I did drain the engine oil separately, so I'll see if I get any separation with oil and coolant, but from the looks of it right now, it doesn't seem like I'll see anything besides straight oil.

It was only doing it when I popped the throttle. If I let it sit and idle, nothing. After I shut it off, it seeped out the end, kind of like a vehicle would during an extremely cold day after you shut it off. Maybe it's nothing and I should ride it like I would normally.

primos97hunter · 09-22-2012, 03:34 AM

Quote:

Originally Posted by pwalston25

sometimes when they are cold and you have the choke on they smoke a very little bit. is that what happened the first time? I dont think having too much oil would cause it to do that. Usually the extra oil ends up coming out the vent tube anyway

Choke=more gas.. Gas smoke is usually black. Oil and antifreeze smoke is usually white

pwalston25 · 09-22-2012, 02:39 PM

yes im aware what the choke does. Mine black smokes a little with the choke on. Just trying to help narrow down the problem

primos97hunter · 09-22-2012, 03:59 PM

Quote:

Originally Posted by pwalston25

yes im aware what the choke does. Mine black smokes a little with the choke on. Just trying to help narrow down the problem

I understand man I was just saying that the choke on does not produce white smoke..

loud450man · 09-24-2012, 11:31 AM

blue smoke= oil, white = coolant, black = fuel

ws450r · 10-15-2012, 12:20 PM

Obviously, I don't start or ride this a lot right now, which is why I'm just now replying to this. I went down to start it and let it warm up for a little while (first time started in 3 weeks, just sits in my basement), and noticed that maybe the smoke wasn't white to begin with afterall. When I started it outside it did look white, but sitting in my basement, at least with the way the lighting was, it almost has a blue tint. I've read that this could be piston rings, among other things.

It has a 13.5:1 JE Piston in it.

1. Could a guy re-ring that piston without taking the piston all the way out?
2. Should I just get a new piston and gaskets, since originally if it was white, it may have been leaking coolant (which I don't think it was since there was no coolant in the oil). I figured this would eliminate some problems that it may be.
3. How much would it hurt it if I rode it on the trails? No hard riding or racing, just nice leisurly trail riding.

I'd like to make it until the winter before I did much of anything to it.

09-21-2012, 08:38 PM	#1 (permalink)
ws450r TRX90 Rider Join Date: Feb 2012 Posts: 21	Engine Oil and White Smoke Can to much engine oil cause white smoke to come from the exhaust. The reason I ask, obviously I have or had some. Started it up last Saturday, had some smoke when I popped the throttle. Read on here could be coolant, head gasket, ect. Talked to a buddy of mine, he said it sounds more like valve guides. I let it sit all week and changed engine and tranny oil tonight for the first time since I bought it (only 1 two hour race ride time in that period). The previous owner had so much oil in it, you couldn't see a "line" in the sight glass. Filled it up to H, let it run for 3-4 minutes, let it settle, then put a little more oil in it, let it run, let it sit. Now after letting cool all the way down, the "line" is almost to the H, so about right. After filling everything, I let it warm up, popped the throttle, basically did everything that I did last weekend to get the smoke. But tonight, I didn't get any after that time. Like I asked earlier, just wondering if all the oil that was in it would cause the white smoke.

09-21-2012, 08:44 PM	#2 (permalink)
primos97hunter Woods 450er Rider Join Date: Sep 2012 Location: Tompkinsville, Ky Posts: 1,448	Im sure it could. Maybe pushing through the rings into the combustion chamber. Not even mentioning it could blow gaskets.. __________________ 06 Trx450r Electric Start AC Front and Rear Bumper AC Nerf Bars PRM 1/4in Swingarm Skid Chassis Skid HRP Poly Case Saver Protaper Bars ODI Locking Grips Aluminum W/A Bark Busters YorkRacing YR-1 Ported Head Stage 2 Hotcam Curtis Sparks Full Exhaust R&D Quick Shot Power Bowl Uni Air Filter BikeMaster TruGel Battery

09-21-2012, 08:47 PM	#3 (permalink)
pwalston25 450r XC Rider Join Date: Feb 2011 Location: Bradfordsville, KY Posts: 1,402	sometimes when they are cold and you have the choke on they smoke a very little bit. is that what happened the first time? I dont think having too much oil would cause it to do that. Usually the extra oil ends up coming out the vent tube anyway __________________ "Ride or don't...Never quit" 08r with 06er engine Fox Float X Evol Gen. 2 Houser +1 XC Arms GTT Revalve and XC link ss/sb cp 12.5-1 HRE porting Stainless Valves with +1 ex. Sparks Exhaust Hrc Cam Hinson Billet Basket Green Wire Mod Uni Filter/No Lid Moose Poly Case Saver Douglas G2 Beadlocks Kenda Klaws IMS/Roll Design Pegs AC Bumper 08+ Red Tank Cover LSR Graphics/Seat Cover LSR Sprocket Guard GTT Poly Rotor Guard Pro Armor Frame Skid Trail Tech Riser Pro Taper Contours HID 6k Lights

09-21-2012, 08:56 PM	#4 (permalink)
ws450r TRX90 Rider Join Date: Feb 2012 Posts: 21	No choke on. I did have a bit of dusty oil on the back of the engine after the race, but not anything crazy. The smoke last weekend was a week after the race, and it sat in the garage that entire week without being started, just like between tonight and last weekend. I did drain the engine oil separately, so I'll see if I get any separation with oil and coolant, but from the looks of it right now, it doesn't seem like I'll see anything besides straight oil. It was only doing it when I popped the throttle. If I let it sit and idle, nothing. After I shut it off, it seeped out the end, kind of like a vehicle would during an extremely cold day after you shut it off. Maybe it's nothing and I should ride it like I would normally. Last edited by ws450r; 09-21-2012 at 09:07 PM.

09-22-2012, 02:39 PM	#6 (permalink)
pwalston25 450r XC Rider Join Date: Feb 2011 Location: Bradfordsville, KY Posts: 1,402	yes im aware what the choke does. Mine black smokes a little with the choke on. Just trying to help narrow down the problem __________________ "Ride or don't...Never quit" 08r with 06er engine Fox Float X Evol Gen. 2 Houser +1 XC Arms GTT Revalve and XC link ss/sb cp 12.5-1 HRE porting Stainless Valves with +1 ex. Sparks Exhaust Hrc Cam Hinson Billet Basket Green Wire Mod Uni Filter/No Lid Moose Poly Case Saver Douglas G2 Beadlocks Kenda Klaws IMS/Roll Design Pegs AC Bumper 08+ Red Tank Cover LSR Graphics/Seat Cover LSR Sprocket Guard GTT Poly Rotor Guard Pro Armor Frame Skid Trail Tech Riser Pro Taper Contours HID 6k Lights

09-24-2012, 11:31 AM	#8 (permalink)
loud450man Keep er pegged Join Date: Oct 2011 Posts: 1,369	blue smoke= oil, white = coolant, black = fuel __________________ mx built 450r...flux capacitor

10-15-2012, 12:20 PM	#9 (permalink)
ws450r TRX90 Rider Join Date: Feb 2012 Posts: 21	Obviously, I don't start or ride this a lot right now, which is why I'm just now replying to this. I went down to start it and let it warm up for a little while (first time started in 3 weeks, just sits in my basement), and noticed that maybe the smoke wasn't white to begin with afterall. When I started it outside it did look white, but sitting in my basement, at least with the way the lighting was, it almost has a blue tint. I've read that this could be piston rings, among other things. It has a 13.5:1 JE Piston in it. 1. Could a guy re-ring that piston without taking the piston all the way out? 2. Should I just get a new piston and gaskets, since originally if it was white, it may have been leaking coolant (which I don't think it was since there was no coolant in the oil). I figured this would eliminate some problems that it may be. 3. How much would it hurt it if I rode it on the trails? No hard riding or racing, just nice leisurly trail riding. I'd like to make it until the winter before I did much of anything to it.

Remove Advertisements Sponsored Links
TRX450R.org Advertisement