Question about 1984 Honda CB 700 SC Nighthawk

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My engine is making a clicking noise which i have determined to be the valves. How would i adjust those valves? Do i have to take the engine out or is there a way to adjust them with it still in?

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Your motorcycle has hydraulic lifters that run off of oil pressure. Your valves never need adjusting. Now the problem, the hydraulic piston assembly that operates the individual valve can go bad . This will cause a loud clacking or clicking sound. If you have several bad lifters it sounds like your engine is full of marbles. Early models in 1983 had quite a few lifters that needed to be replaced. The Honda dealer knows how to test individual lifters to see if they are worn and need to be replaced. One other possibility, you could have a bad cam chain tensioner . That can cause an even clatter/clicking sound and can usually be installed through the top of the motor

Posted on Sep 15, 2010

  • TheKracken Jan 13, 2013

    I have the same bike, same problem. Does someone know about what the dealerships charge to replace lifters?



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My bike is making a clicking noise in the engine near the exaust pipes whenever i excelerate. What could be the problem?

A clicking noise in that area of the engine is most likley an indicator that your valves are in need of adjustment. The valve train parts wear over time and need adjusted because of the excess clearance that results. Check your manual for the procedure to make these adjustments.

Sep 13, 2010 | 1984 Honda CB 700 SC Nighthawk

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My rockerarms are loose on my 2.2liter engine. how can i adjust them?

Adjust the valves when the lifter is on the base circle of a camshaft lobe:
  1. Crank the engine until the mark on the crankshaft pulley lines up with the O mark on the timing tab. Make sure that the engine is in the No. 1 firing position. Place your fingers on the No. 1 rocker arms as the mark on the crank pulley comes near the O mark. If the valves are not moving, the engine is in the No. 1 firing position. If the valves move, the engine is in the No. 4 firing position; rotate the engine one complete revolution and it will be in the No. 1 position.
  2. When the engine is in the No. 1 firing position, adjust the following valves: Exhaust - 1,3 Intake - 1,2
  3. Back the adjusting nut out until lash can be felt at the pushrod, then turn the nut until all lash is removed (this can be determined by rotating the pushrod while turning the adjusting nut). When all lash has been removed, turn the nut in 1 1 / 2 additional turns, this will center the lifter plunger.
  4. Crank the engine one complete revolution until the timing tab and the O mark are again in alignment. Now the engine is in the No. 4 firing position. Adjust the following valves: Exhaust - 2,4 Intake - 3,4

May 12, 2010 | 1992 Chevrolet Cavalier

1 Answer

My 1992 dodge stealth rt has a clacking noise from engine when running .we have determine the noise is comming from the lash adjusters.what should we do .

The lash adjusters are hydraulic and will have to be replaced. They can be replaced without removing the head, you just have to remove the necessry intake & parts that restrict your access to removing the valve covers, then remove the rockers (that's where the adjusters are of course), replace the adjusters and reassemble. Make sure you note the direction of everything, once reassembled it should fit exactly as it did before, with a little less slack.

All engine parts like this need oil. Soak the valve lash adjusters in oil overnight before installing, preferably in a warm location, or place a warm light next to the container you put them in, they work like valve lifters, just smaller.

Good luck

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2000 astro has intermittent clicking noise from engine compartment

The clicking noise emanates from the clicking of the
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A lifter clicking noise

its your valve lash thats clicking. make an oil change and put some oil treatment. if it still exist, adjust your valve lash.

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