Cylinders misfiring aswell as P1399 code.. Need HELP ASAP

[DaMonkeyManJD]

I have all these coming up...

P0301- Cylinder 1 misfiring
P0302- cylinder 2 misfiring
P0303- cylinder 3 misfiring
P0300- random / multiple misfire detected.
P1399- Manufactures control Ignition system OR Misfire

My timing belt snapped last week i changed the water pump and timing, and
I changed out 02 sensor, Dist. Cap, Wires, Plugs, Ignition Rotor, and Temp Sensor. I readjusted the timing and ran a pressure test in plugs (all is fine w/ pressure) and im still getting all those codes..

Ive talked to a few mechanics and they have said it needs a Valve adjustment... Cause at first it was only misfiring in Cylinder 1. then all of a sudden it started misfiring in all 4 and now its over heating. 6 months ago i had a new head gasket put in.

I need help..

[DaMonkeyManJD]

I guess i better tell u my car is a Honda Civic LX 1998

[lazlong]

Sounds like valve adjustment is good advice.

[DaMonkeyManJD]

Sounds like good advice? hmm Does anyone else have any input for me?

[DaMonkeyManJD]

Any Idea how much a Valve Adjustment would Cost me?

[lazlong]

OK smarty. It is good advice although, it may not solve the problem. It could very well a bad headgasket with blowing the timing and all. Or it could be a bent valve, etc. Basically what I'm saying is there are a lot of causes of misfires, you just have to go thru them until you find the cause. Valve adjustment and looking for a blown headgasket would be likely places to start.

[DaMonkeyManJD]

sorry for being a smart ***, not meant to be mean or anything i apologize...i just replaced the head gasket 6 months ago.. and while they were in there they didnt redo my timing or my water pump which is what i also changed last week.

[DaMonkeyManJD]

So i DId a little more Research and found that the p1399 code is the Ignition Module in the Distributor, but someone else is also telling me that its the Coil.. Who do i BELIEVE? any suggestions?

[benimcan]

Hi there, I have the exact same problem with exactly the same model 98 Honda civic. I dont know anything about cars and my car is not in great shape. I did have a specific question though. The misfirings started after I got my smogcheck. The guy doing the test said that my timing belt was off a few degrees and my car would not pass the test because of it. He said he could adjust the degrees to give car more power for $30. So I said ok and he did it. After 2 days my car started misfiring while starting up. I would get the shaking and it comes close to not starting. I found out the codes today and it was the same as original post plus the 4th cylinder. My question is could this have been caused specifically by the mechanic changing the degree of the timing belt?

[RonJ@HT]

1) Check the mechanical timing



2) How old are the plugs, wires, cap, rotor, and fuel filter

3) Have the coil and ICM tested