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FJR Motorcycle Forums
Technical & Mechanical Problems
Valve Check Problem!
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<blockquote data-quote="RossKean" data-source="post: 1437610" data-attributes="member: 19880"><p>Swapped the old plugs back in and I am still having issues. Starts very easily and runs fine until the cold idle goes to normal. Engine starts to bog at one or two bars on the temperature gauge. I kept it running at around 1200 rpm until it was fully warmed up - 5 bars or mid-scale for a Gen II. After that temperature, I really had to play with the throttle to keep it going. I shut it off in case something was going on that might cause damage.</p><p></p><p>Could a TBS that is off by a lot have this effect? (I wouldn't expect so) It was running well before the valve check. I noticed one torn sync port rubber cover and replaced it. I have not done the TBS yet. I was thinking about doing a throttle body cleaning and wasn't going to do the TBS until after.</p><p></p><p>Would a cam timing issue cause this? Don't know how it could happen but anything is possible, I guess.</p><p></p><p>Engine seems to rev OK but can't really tell if power is off without buttoning it back up for a ride.</p><p></p><p>Pretty sure valve clearances are OK - ran it through two cycles and nothing below 0.18 and I had one at 0.21 which is close to the maximum.</p></blockquote><p></p>
[QUOTE="RossKean, post: 1437610, member: 19880"] Swapped the old plugs back in and I am still having issues. Starts very easily and runs fine until the cold idle goes to normal. Engine starts to bog at one or two bars on the temperature gauge. I kept it running at around 1200 rpm until it was fully warmed up - 5 bars or mid-scale for a Gen II. After that temperature, I really had to play with the throttle to keep it going. I shut it off in case something was going on that might cause damage. Could a TBS that is off by a lot have this effect? (I wouldn't expect so) It was running well before the valve check. I noticed one torn sync port rubber cover and replaced it. I have not done the TBS yet. I was thinking about doing a throttle body cleaning and wasn't going to do the TBS until after. Would a cam timing issue cause this? Don't know how it could happen but anything is possible, I guess. Engine seems to rev OK but can't really tell if power is off without buttoning it back up for a ride. Pretty sure valve clearances are OK - ran it through two cycles and nothing below 0.18 and I had one at 0.21 which is close to the maximum. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Valve Check Problem!
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