How many km on the engine?
low-end power/accel issue after changing oil
I have a low end power/accel issue after changing my oil. Usually she bursts out of first gear but now there is significant time elapsing between gunning it full throttle and needing to shift; I notice myself waiting while the throttle is all the way open. I just switched to full synth and splurged on Repsol 4T racing oil. Now my guess is that racing oil is different and shouldn't have been used. Any thoughts?
I'm also thinking that changing my oil to a regular full-syth oil might do it...or flush out the oil completely. Let me know thanks!
I'm also thinking that changing my oil to a regular full-syth oil might do it...or flush out the oil completely. Let me know thanks!
1 - 19 of 19 Posts
just under 7000 mi so about 11,000km? dealer gave me 10w40 at 600mi service, I switched to mobil 10w30 semisynthetic at 4000mi which ran well and then just switched to the fullsynthetic respol two weeks ago. It started off running really well with the repsol but got progressively worseHow many km on the engine?
My first thought is: coincidence. I'm thinking there's something else going on and your performance issue has nothing to do with the new oil . . . .just under 7000 mi so about 11,000km? dealer gave me 10w40 at 600mi service, I switched to mobil 10w30 semisynthetic at 4000mi which ran well and then just switched to the fullsynthetic respol two weeks ago. It started off running really well with the repsol but got progressively worse
Something to consider, anyway.
Okay thanks for the input. I've been racking my brain and all I can think is possibly the spark plug (the wire looks exposed and my chain has flung a lot of chain wax in that area) or maybe has something to do with the valves. I don't have a full knowledge of my engine yet, so I might just take her in..
got to ask the question. is the oil filter in the right way?
I am 90% sure it is...I have asked myself that too but I don't want to drain the $40 of oil I just put in it lol. I have OEM filters that are etched with which way to put it, and I remember being pretty aware of it.got to ask the question. is the oil filter in the right way?
Do you think if I drained the oil into a clean pan I could put it back in? This has driven my curiosity to check...
I posted this in another thread a few days ago, in reply to a similar question:I am 90% sure it is...I have asked myself that too but I don't want to drain the $40 of oil I just put in it lol. I have OEM filters that are etched with which way to put it, and I remember being pretty aware of it.
Do you think if I drained the oil into a clean pan I could put it back in? This has driven my curiosity to check...
I wouldn't drain the oil from the crankcase. With the bike leaning on the side stand, and just removing the oil filter cover, I don't think you will lose much oil from the filter housing. After you get it sorted out and back together, just top off the oil to the correct level.
For what it's worth, if you had inadvertently installed the oil filter backwards, I think you would have experienced the engine seizing up fairly quickly. I'm thinking you have something else going on with your bike... is it still under warranty? Either way I'd get it into the dealer and have them check it out.
[agree with above good advice] but as you asked,
cant see a problem draining oil then pouring
it back in again, if you wanted to do that..
if youre worried about particles in the oil
let it sit and settle for a while before
pouring it slowly back in there..
if your keen you could drop a magnet
into the container and agitate it a bit,
then pour it thru a filter [
]
cant see a problem draining oil then pouring
it back in again, if you wanted to do that..
if youre worried about particles in the oil
let it sit and settle for a while before
pouring it slowly back in there..
if your keen you could drop a magnet
into the container and agitate it a bit,
then pour it thru a filter [
]
Haha I actually used motomike's trick and work great. My filter was on the correct way.
After checking the filter I lost some oil, but did not replace it all because I filled it up to the fill line instead. I took her for a 30min spin and she accelerated well in the low and high rpms. Seemed to run normal.
My question now is could too much oil have bogged down the engine? When I did my oil change I put in about 1.6L, but later drained some because it appeared I had too much.. Now after checking the filter I drained more out (note that it looked a little bubbly, too). From what I initially put in and what I have taken out, I would guess I only have about 1.2-1.3L in her at the moment.
After checking the filter I lost some oil, but did not replace it all because I filled it up to the fill line instead. I took her for a 30min spin and she accelerated well in the low and high rpms. Seemed to run normal.
My question now is could too much oil have bogged down the engine? When I did my oil change I put in about 1.6L, but later drained some because it appeared I had too much.. Now after checking the filter I drained more out (note that it looked a little bubbly, too). From what I initially put in and what I have taken out, I would guess I only have about 1.2-1.3L in her at the moment.
When I did my oil change the other week I used 1.6 L resulting in the oil being level at the upper mark of the sight glass. The bike now runs smoother than ever.
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i'm not sure about how bikes are set up but on a car, if you have too much oil the crankshaft will splash in the oil and rob the engine of power. High end car engines have a windage tray which stops oil from splashing onto the crankshaft. The crankshaft will also cavitate (bubble) the oil which will drastically reduce its ability to lubricate the engine properly.
I think this may be the problem. There are no bubbles now but I still think I may have too much in there, possibly from not letting it drip completely out on the change. As long as I go by what I see in the sight glass It should be okay. I would think less would be better than more in this case, if I had to choose onei'm not sure about how bikes are set up but on a car, if you have too much oil the crankshaft will splash in the oil and rob the vehicle of power. Hight end car engines have a windage tray which stops oil from splashing onto the crankshaft. The crankshaft will also cavitate (bubble) the oil which will drastically reduce its ability to lubricate the engine properly.
I would agree.As long as I go by what I see in the sight glass It should be okay. I would think less would be better than more in this case, if I had to choose one
Most of the time if you put in too much oil it will make the oil foam and oil doesn't lubricate as well or get to the parts of the engine that need it if it's foaming.
I accidently put too much oil in my snowblower last week and after starting it I realized something was wrong. When I tried to drain the excesss oil it had become so foamy and filled with tiny air bubbles it wouldn't even flow out of the drain pipe. I had to let it sit for a good couple of hours before the bubbles dissapated enough that the oil flowed normally again.
With a small engine like the CBRs it's critical that the oil level is correct. Standing the bike upright the level should be between the low & high marks in the sight window, never over the "full" mark. Since small bikes don't normally use a lot of oil it's important to get the level right the first time.
I accidently put too much oil in my snowblower last week and after starting it I realized something was wrong. When I tried to drain the excesss oil it had become so foamy and filled with tiny air bubbles it wouldn't even flow out of the drain pipe. I had to let it sit for a good couple of hours before the bubbles dissapated enough that the oil flowed normally again.
With a small engine like the CBRs it's critical that the oil level is correct. Standing the bike upright the level should be between the low & high marks in the sight window, never over the "full" mark. Since small bikes don't normally use a lot of oil it's important to get the level right the first time.
Never check or add oil with the bike on the side stand. It should always be standing straight up when you check it and add it.
Look at the oil level in the viewing window with the bike flat and level (on a stand, or while held vertical). That is what that window is for. Do not guess / second guess, or estimate.
Yes, too much oil could cause this type of problem, and it would look frothy or full of bubbles if it were overfilled.
Rick
Yes, too much oil could cause this type of problem, and it would look frothy or full of bubbles if it were overfilled.
Rick
Thanks to all. This made me realize how important it is to know how to check your oil and taught me a valuable lesson which I thought nothing of before.
Shout out to DJ for the oil checking vid! Thank you sir!
http://www.cbr250.net/forum/cbr250-service-maintenance/5649-oil-level-check-do-right-no-fear.html
Shout out to DJ for the oil checking vid! Thank you sir!
http://www.cbr250.net/forum/cbr250-service-maintenance/5649-oil-level-check-do-right-no-fear.html
Thanks, but I am aware of that much. you wouldn't get very far checking it on the side standNever check or add oil with the bike on the side stand. It should always be standing straight up when you check it and add it.
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