I have a automatic DD 1993 honda civic dx, I was driving for like about 150 miles,when it started to vibrate alittle. I pulled over and noticed that the whole car would shake vigorously even harder when I put it into D4. I tried starting my car up a couple times, and everything it seems like the cars about to die on me. thanks any help will be greatly appreciated

 

bump for help

 

Do you feel this vibration in the steering wheel or more like in the seat? Rough idle? Any CEL?

 

any specific speed when it starts to vibrate

 

the vibration starts right wen I turn on the car, and it vibrates nonstop in park/drive/reverse.
my car struggles to start ive noticed.

 

is there oil in the damn thing?

 

theres no oil in the sparkplugs, however, it seems that I am leaking oil from the valve cover.

 

check your engine and transmission oil levels. if it shakes on startup, something's not getting enough lubrication or your timing is off by a lot.

 

Sounds like you are experiencing a misfire. Check for spark on all the spark plug wires and inspect your spark plugs as well.

 

Check all your engine mounts as well.

 

update, so I changed my spark plug wires and my sparkplugs. My engine mounts look fine, and my alternator is working properly. what else can be the problem?

 

bump

 

oil level/seals?

 

I replace the valve gasket and did an oil change and transmission fluid looks fine

 

do u have compression to all 4 cylinders?

 

yes

 

Have you checked for injector pulse on all injectors? Cam timing? Ignition timing? Vacuum leaks?

 

are you sure its not misfiring? because it really sounds like its misfiring.

 

did a compression test, turns out all my cylinders were 200 psi but my third was 35 psi, so I what problems should I expect when I take off the head

 

um a blown valve seal hopefully!

 

200, 200 35, 200 compression test, So I know cylinder three is gonzo, what parts would I expect to replace.

 

 

Depends on where the loss of compression is.

Put a few psi of air into your cylinder then listen for where the sound is coming from. Just put your ear up to your muffler, then your intake, then open your oil cap and listen in there.

1. exhaust- valve or valve seal
2. intake- valve or valve seal
3. crankcase- piston ring, piston, or cylinder wall

If the head gasket is bad it could also be coming out of your coolant system, but that's not very likely.

The only other way compression can get out is through a hole in the cylinder head, and I'm sure you would have noticed that.