07 GSXR 600 white smoke and low compression - GSXR.com
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post #1 of 10 (permalink) Old 08-21-2019, 10:13 PM Thread Starter
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Exclamation 07 GSXR 600 white smoke and low compression

Hey guys,
I live in Florida and I have a 2007 GSXR 600 with 23,000 miles. I am new to the website and fairly new to riding. I bought the bike about a year ago and the previous owner had it tuned for 93 octane and removed the cat converter to install a shorty exhaust. It ran great at first but now I am seeing some issues. I took my bike to the shop early July for a valve adjustment (wasn't sure if it was done previously and I felt like it was running sluggish). The mechanic measured the gap but it was within limits (some right at the minimum), so he just changed the spark plugs for me. I have had some white smoke issues that would occasionally build-up in the past but the smoke got much worse about a week after the shop. It wouldn't happen immediately, it would occur when the bike was around normal operating temp and it was a light to thick white smoke that was coming from the front of the bike around the headers. I later noticed the exhaust header bolts were loose and had oil dripping from them. I dropped the radiator (flushed the coolant at the same time) and replaced the metal bushings in the headers and then torqued the exhaust header bolts to spec. I also flushed the oil and I didn't notice any milky or frothy consistency, so I changed the oil and filter. I haven't noticed any more oil leaking and I did this about 2 weeks ago. I rode it a few times but nowhere far and I am still noticing smoke, only it is thinner white smoke that comes and goes. I did a hot compression test today and all cylinders were below standard (but above the minimum 142psi). 1- 165, 2- 170, 3-170, 4- 175. The standard in the book is somewhere around 185 - 245. I did it again with oil and the numbers were exactly the same. The book says it's a leaky head gasket or worn valve seals. Oil level hasn't changed and neither has coolant level. No overheating issues, Oil does not smell funny and spark plugs look good to me (ill attach pics tomorrow). I did find a decent amount of oil under the air filter housing when I removed it to do the compression test (engine was hot and I just finished riding). Looking for any advice before I take it to a mechanic and get raped. Thanks in advance guys and let me know if I missed any details you guys need.
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post #2 of 10 (permalink) Old 08-22-2019, 04:51 AM
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Welcome.

The key would be what does the white smoke smell like? Oil, coolant and burning plastic have very different smells.

I would not obsess with the compression test. I think the service manual is high on the number. The more important part is all your cylinders are pretty close together.

Post an intro in the "New riders and members" section, with pics of you bike, when you get a chance.

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post #3 of 10 (permalink) Old 08-22-2019, 09:50 AM
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Exactly what John said... And I'll add... If you had oil dripping from the header seals, replacing the header seals is not going to fix that. Oil is not supposed to be in the exhaust in the first place. If none of your spark plugs are getting crusty from burning oil, I would have to think you have a damaged exhaust valve seal... Maybe a few of them. Seems like an odd occurrence to me. For white smoke, you would have to be burning a LOT of oil... Are you filling your oil to level while on the side stand? Something isn't gelling with your description, especially the spark plug condition... Take a picture or 4 of your plugs please...

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post #4 of 10 (permalink) Old 08-22-2019, 01:43 PM Thread Starter
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Pics of the plugs in order from 1 to 4, the mechanic changed them a few weeks ago so they are brand new. They were pretty dry. The top of the coils had some oil on it but inside the plug well was dry.
Attached Thumbnails
20190822_152624_1566506297998.jpg   Plug 1_1566506431538.jpg   20190822_152936_1566506456859.jpg   20190822_153152_1566506474290.jpg  
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post #5 of 10 (permalink) Old 08-22-2019, 01:48 PM Thread Starter
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I spotted a residual oil leak above the header bolts around what I think is the intake manifold. There is a glossy wet appearance and a drip building up below it
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20190822_164644_1566506820824.jpg   20190822_154029_1566506866407.jpg  
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post #6 of 10 (permalink) Old 08-22-2019, 01:58 PM Thread Starter
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Besides that there is alot of carbon build up around the throttle body. I think it's carbon. It's really hard and kind of has a rubbery appearance. Also noticed a brown tint on the coils, burnt oil maybe?
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20190822_165106_1566507143196.jpg   20190822_165315_1566507258562.jpg   20190822_153253_1566507355944.jpg  
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post #7 of 10 (permalink) Old 08-22-2019, 02:04 PM Thread Starter
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Thanks for the feedback. I will upload some pics of the bike for sure. I was wrong, the compression specs are a lot closer than I mentioned. Standard is 171 to 228 psi
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post #8 of 10 (permalink) Old 08-22-2019, 02:11 PM Thread Starter
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Sorry for the scattered post but no I am filling on two stands that hold it level and oil is good in sight glass. Im not getting a lot of white smoke any more since i changed the oil, coolant, and tightened down headers. It's still there though but light. I will look out for the smell next time I run it
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post #9 of 10 (permalink) Old 08-23-2019, 05:48 AM
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Quote:
Originally Posted by ercost09 View Post
I spotted a residual oil leak above the header bolts around what I think is the intake manifold. There is a glossy wet appearance and a drip building up below it
That is a pretty good leak from the drip that is forming and it is right above your hot exhaust headers so I suspect you will have a burning oil smell.

That is your valve cover gasket leaking. Not a hard fix and this makes sense since you also mentioned a bit of oil around the coil sticks. There are seals there that are replaced at the same time as the cover gasket.

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Originally Posted by Chuckster View Post
If you think reading is tricky, how the hell are you going to follow troubleshooting directions?
"Riding well is difficult, riding poorly is easy and painful."
- Nick Ienatsch


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post #10 of 10 (permalink) Old 08-23-2019, 02:15 PM Thread Starter
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Thanks, I ordered all the gaskets. Thanks for the help.
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