engine troubles

["angela jimenez" <angela_J1s@xxxxxxxxxxx>]

I havn't done a compression test yet but I plan to next weekend. There is no
sign of coolant in the oil or oil in the coolant. I found that the # 7 & 8
cylinders aren't firing by pulling the plug wires off one at a time wile the
engine is running (be sure to wear thick gloves, it can be a shocking
experence if you don't). If the sound of the engine changed I knew it was
firing, if the sound didn't change I knew it wasn't. I did pull the plugs,
they were dirty and wet. Also while I had them out I connected the wire to
the plug and turned it over, they did spark. I ran the engine for a few
minutes after I sent the last message and the # 7 & 8 cylinders hit 10 or 15
times a minute when ideling at about 900 rpm. When I rev it up it drops
them.

Justin
----- Original Message ----- 
From: <RandalPark@xxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Sunday, August 22, 2004 8:53 PM
Subject: Re: IML: engine troubles


> Have you done a compression test?
>
> Also, what test are you doing to determine that numbers 7 & 8 are dead?
How do you know that they are getting spark? Have you taken the plugs out
and seen that they have been firing? If they still look brand spanking new,
they haven't fired. If they are firing, then there could be a valve problem,
piston problem, cracked casting, or broken head gasket. These would show up
as very low or no compression on those cylinders.
>
> If there is a cracked head or cylinder block, you may see bubbles and/or
oil in the radiator, or even a loss in coolant while the engine is running.
There could also be coolant in the crank case. A blown head gasket could
also cause these things.
>
> Broken pistons and burned valves have other unmistakable symptoms all
their own.
>
> Paul