Repost: power loss issue

[Irish_Alley]

did you ever check for a leak

[nativetexan]

I will check plugs and take pictures. And check for leaks. Thanks guys

[nativetexan]

Okay, bought some starting fluid to test for leaks and a vacuum gauge. Put the vacuum gauge inline with the EGR vacuum solenoid. It idled at about 22. and then when I increased throttle a little, it would drop to about 15. If I revd it to the place where it bogs out, it dropped to 5. I switched the gauge to the port on the tbi below the breather on the right, I think it is A. gauge stayed at 0 until I increased throttle and then it would shoot to about 10-15.

As for the spray test with the starting fluid... it didnt do anything when I sprayed it on the manifold and brake booster and line. Any thoughts. Can someone define what the readings I got?

UPDATE___________________________________



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Here are my plugs... Yikes. I got problems.

[1979C20]

Air fuel mixture. Too rich on one bank, too lean on the other.

[nativetexan]

Air fuel mixture. Too rich on one bank, too lean on the other.

what now? How do I resolve that?

[jaredts]

Air fuel mixture. Too rich on one bank, too lean on the other.

You looking at the same pic I am?  3 black plugs on one side and 2 on the other?  Who rebuilt this motor?  Did you go through a break in process?

[Irish_Alley]

lol i was thinking the same thing. have you done a pressure check?

[thirsty]

3 black plugs on one side and 2 on the other?  Who rebuilt this motor?  Did you go through a break in process?

X2
If I had this problem for this long my next steps would be looking into why all 8 plugs were not burning the same. Too me it sounds like there are multiple things wrong with this.

[Irish_Alley]

is that the order they came out in? top side being 1357 bottom being 2468? if so the ones that are lean are alternating firing order i.e. 1,4,6 dont know what that means but it seems odd

[1979C20]

2, 3, 5, 8 are on one half of the intake and 1, 4, 6, 7 are on the other half. I didnt thi nj k when I said bank, I meant plane.

[Irish_Alley]

2, 3, 5, 8 are on one half of the intake and 1, 4, 6, 7 are on the other half. I didnt thi nj k when I said bank, I meant plane.

que? where did you get that info from? we knew what you meant by bank
you bought your repair manual from ebay didnt you?
i learned my lesson from them before



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[1979C20]

Follow the intake runners to the base, youll see what I mean. The stock intake is dual plane.

In this pic, runners 2, 3, 5, 8 are on the raised plane on bottom and 1, 4, 6, 7 are on the lower plane on the top.

[nativetexan]

Yes the plugs are in the order they came out. Left side is driver. A friend is gonna come help me do a leak down test. Im too much of a newb to know what would cause a rich/lean issue so if someone could break it down for i would apreciate it.

[Irish_Alley]

never really look at it that way 79 lol

[Captkaos]

Bank to bank (left vs right) is how you determine the cylinder numbers universally...

Driver side of the motor is ODD numbered 1,3,5,7
Passenger side is Even numbered 2,4,6,8