I have a 1993 Honda Accord Anniversary Edition. We had oil in the spark plugs so we changed the valvue cover and spark plug gaskets and seals, put in new spark plugs and spark plug wires. Still when we are at a stop the engine idols slow and the check engine light comes on. Then the other day going down the freeway at about 60 and 3000 rpm the rpms started to bounce up and down eratically. The check engine light is still a code 6, which is a temp. sensor, but the sensor is testing good. We have two questions. First any idea on what the problem could be and second how do we clear any stored codes.
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These have a know issue with the Distributors.. You may be seeing a spark but the spark may be so weak that it is not sufficient to ignite the air/fuel mixture in a compressed environment.
I had this happen to my 1992 Honda. Cost me over $400 in Troubleshooting and nobody could figure it out. I went to one of my venders (Parts for Imports) and they enlightened me and sold me a New Distributor and installed it and BAM!!!! Ran like a top.
I did extensive Troubleshooting myself, ran into a brick wall because mine was doing the same... Good Fuel Pressure, Spark but Nothing.
One thing does come to mind that I tested mine and that is to do a Compression Test or pop the cover off the Timing Belt to see if it is Moving or if the Timing has jumped...
This Motor is an INTERFERENCE MOTOR, If the Belt Broke or Slipped, you could have caused some damage.
If you need any further assistance, please let me know. I have an extensive Background with Honda's... I certified as an ASE Mechanic in 1979 (Dang I am getting OLD)....
Did you change what's call the "tube seals". It should have came with your valve cover gasket kit. 4 rings that push into the valve cover... If you did this and you still have oil, maybe your plug wires are still wet inside. Is the fuel filter very old?
No, Just change your Valve Cover....sometimes the seal leak that is around the spark plug tube.. When you get the valve cover, make sure it comes with the four seals that goes over that area, because some kits, do not come with them
When you changed the valve cover gasket, did you also change the seals that go around the spark plug holes? If you did,and theres still oil getting in there, they might have moved when you installed them. If thats the case, hold the seals in place with some RTV black sealant and try it again.
I like to make sure the timing belt is not skipped or broken by watching the cam turn inside the valve cover. Then I lay a spare spark plug on valve cover connected to any plug wire to see if it sparks. Fuel can be confirmed by smelling the exhaust, or by using starting fluid . These cars are famous for a coil relay solder break problem. The relay is heat expansion damaged, its mounted high up in the dash drivers side corner it is about 3" square gray.
Yes the oil can cause the car to lose spark, the oil leak could be caused by the valve cover gaskets around the spark openings, but 9 times out of 10 it is the spark plug tube "O" rings. The top of the valve train comes off of the head, the "O" rings are between the two halves, that will fix the oil leak.
ok.....as far as the oil on them it is possible it is only the spark plug tube seals located on the inside of the valve cover,in fact if you can remember when you took the old plug wires off the boots of a couple propably had oil on them.now as far as the real problem I would recommend checking the timing belt it is possible it jumped time,its pretty simple just remove the valve cover(gonna replace the seals anyways)and top timing cover.roll the engine around and look for the cam and crank marks.if you need anymore suggestions or help let me know have a good day DB
a new valve cover gasket and o-rings around the wells should have cured this...did you clean the old o-rings off the valve cover completely before installing new ones? this is a common problem with these models.....i would re-check my gaskets and mateing surfaces. valve cover gaskets and spark plug well o-rings are relatively low cost. the spark plug is tight, correct? write back with an update!