Turbo and Supercharger discussion
User avatar
By york62
#7197 ok so i got my catch can done today and installed, i also got new VC seals new plugs and wires, in hopes that that would fix my problem.

my problem was too much blow-by, causing the seals in my VC to blow out and ruining my plugwires. which intern i thought was the cause of my resent power loss.( ever since. reassembly after body work.) when i discovered the blown seals, and replaced them the first time.

So i did a compression test, and the numbers were 190-120-110-150, after i few hard pulls on the new plugs they look like this:
Image

Also when driving at 4000rpm i have 1-2psi of boost and doesn't hit peak boost until about 5700-5800rpm, and it isnt even peak boost its about 9psi, but these numbers are WAY off on my dyno sheet peak boost is at about 5200rpm:
Image

AND at idle with the oil to the normal level, its low low, and the oil light slowly flickers on, and most of the time almost stals.

I donno whats going on but my car just isnt the same :cry: i hope someone can help me out, ask any questions and tell any ideas, at this point anything coudl help.

thanks in advance!
User avatar
By teal_dx
#7204 I'd investigate those low compression #'s before you do any more hard pulls.

could possibly be rings or valve seals, or a combination. Once you get that taken care of, it will be much easier to pin point problems.
User avatar
By york62
#7234 very true,will do
User avatar
By teal_dx
#7689 I vote valve seals, that would put the pressure in the valve cover, causing more blow by. The extra pressure could have also caused the leak around the spark plug seals and got oil on them.

I'd say it's tinme to buy a used head with less mileage or have yours rebuilt :thumb:

The beauty of D series heads is you can get a used vtec head for about $100
By extream_86
#7691 take off your valve cover, put your plug wires in, and run it for about 30sec. if you have oil squirting to the sealing you need seals. you might also want to try a leak down test. you will hear air where you have the leak.