1997 Honda Civic Bent valves,

1997 HONDA CIVIC
134,210 MILES • 4 CYL • FWD • AUTOMATIC
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DANTAKAYAMA
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Water pumped froze and broke the timing belt. I replaced both. #1 and 2 pistons have 180psi compressions. # 3 piston @ 170 psi. #4 piston is @ 150psi. The car drive a bit rough and emitts some some while driving.

Quetions: If I were to replace the valves, should I replace all the valves or just the damaged? Do I need to replace the valve springs?, Valve guides, etc?

Thank you for your input.

Sincerely
Daniel Takayama
Mar 1, 2009 at 6:08 AM
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MHPAUTOS
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Hi there,

Thank you for the donation,

Each valve & guide can be assessed individually, if its not damaged ti can be refaced with out a problem, same with the guides & seats, valve springs should be fine, you can measure the free length and compression rates and check against normal specs if you want, but i only ever do this with performance engines as normally this is not a problem.

mark (mhpautos)
Mar 1, 2009 at 6:36 AM
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DAVE H
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Hello.. Thanks for the donation .. much appreciated

Your cylinders are within the spec's .. generally you replace just the bent valves .. but I would alway's have the head pressure tested whilst still off the vehicle to be sure a valve is not slightly bent or there are damaged valve seals/guides ... the springs should not need to be replaced

Engine compression
Civic... standard Psi184 .....Min Psi135... RPM@250

Hope this helps ... let me know
Mar 1, 2009 at 6:43 AM
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