Question about 1989 Honda Civic
I have a 1989 honda civic that never had smog problems till after a rebuilt head was installed. Mechanical timing is dead on, checked with timing light as well and dead on 18BTDC. Engine has new head, new air filter, oil, oil filter, o2 sensor, raditor, plugs & wires, distributer cap and runs real good but fails too high hydrocarbons? What are most common thing I should check. I really dont have a lot of money to put into this car so I would like to be able to test my parts before replacing them.
Bingles,,,have you changed the oilseals on the valve stems or used the old ones?these tend to harden after a few years and even a slight leak may lead to high emissions, also v,important did you use the old head gasket or replace it? always use a new gasket as an old one has already been compressed and may cause a cross-flow leak into one or all of the piston chambers.
hope this helps.
Posted on Jul 24, 2009
Try to re adjust your timing to 12 BTDC to have a complete burn on your AF mixture.
Posted on Sep 04, 2015
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Posted on Jan 02, 2017
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