Low Compression?

Carbon build-up in the combustion chamber will raise the compression pressure or a head resurfacing job.

Try engine decarbonizing-might work[/quote:41c1d4845f]

How do I do engine decarbonizing? And if I need to buy anything what do you recommend buying?
Thanks

Can I use a manual for 1996-2000 to adjust motors timing correctly. I can not find a manual where I live for 1995 honda civic lx 1.5

92, honda, civic VX Hatchback. 102k miles 1.5L Vtec.
I would like to do a compression check on my civic, but I can't find anywhere in my service manual at what psi it should read at. All I find is my compression Ratio (9.3), so I am not sure how to find out what psi it should read at?
Also, am I suppose to disable the fuel pump since it has fuel injection?
Thanks

Okay here is what I have come to understand about the timing. I have to set the tdc mark with the pointer on the timing belt cover. Then I am to turn the crankshaft counter clockwise 360 degrees back to tdc. But do line it up with the timing belt cover mark again or the pointer on the block. That is where I am now confused.

Am I suppose to disable the fuel pump since it has fuel injection?
Thanks

Between 125-135 psi give it 20% +/- from highest reading[/quote]

[/quote:35022848ca]

Fuel pump fuse or fuel pump relay-[/quote]

Where can I locate the fuel pump fuse or relay?
I referred to my service manual and it says nothing about it.

I had my engine overhauled last year and according to mechanic it was left "new". That mechanic has disappeared from scene (I hope from Earth) and I now find that two of my four cilinders are under compressed, or almost non-functioning. My good little car is thus chugging along pretty faithfully (though when AC is connected it'll stall at idling or even very low speeds) on only two cilinders. My new mechanic (I trust him, yet.) Says it's a valves problem and he'd have to again open up motor, a rather expensive job for an old car. Is there any way of fixing the under compressed cilinders or valves or whatever without too much expense? Anyway. I'll probably sell the car, but I'd rather give it away in a decent condition, as in every other way it's still a beauty, than just take it to the vulture park?

Is there anything else I need to do? Like disable the ignition or anything else for testing compression?

Is there anything else I need to do? Like disable the ignition or anything else for testing compression?[/Quote:9d5769205e]

Go ahead and remove the PGM-FI main relay. Then do your dry and wet check, makes sure you remove all the sparks plugs and mark the wires and also block the throttle plate wide open-[/quote:9d5769205e]

Can I just hold down the gas pedal all the way when cranking the engine instead of blocking open the throttle? Also when doing the wet test, do you recommend using any special oil like marvel mystery?

Is there anything else I need to do? Like disable the ignition or anything else for testing compression?[/Quote:46117a2cde]

Go ahead and remove the PGM-FI main relay. Then do your dry and wet check, makes sure you remove all the sparks plugs and mark the wires and also block the throttle plate wide open-[/quote:46117a2cde]

Can I just hold down the gas pedal all the way when cranking the engine instead of blocking open the throttle? Also when doing the wet test, do you recommend using any special oil like marvel mystery?[/Quote:46117a2cde]

You cannot be in two places in one time get a helper while you look at the gauge-10W30 will do it.

You need to puff it atleast 5 times[/quote:46117a2cde]

So is that a yes, it will be sufficient to have a helper press down the gas pedal while cranking and me looking at the gauge?
How much oil am I supposed to put into each cylinder?
Thank you for your responses, I really appreciate it.

I have recently experienced an idling problem. Every time I slow down and the vehicle does into a choked idle, mostly ending in a stall. As long as I give it gas, it runs, if choppy at best. I recently replace the spark plugs and did a compression test. The #3 cylinder had a very low compression, compared to the others. What should I do?