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post #1 of (permalink) Old 09-12-2000, 01:10 AM
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unpowered Blazer s-10 4.3L 4x4

Hello s-10 lovers... hey, i have some power loss on my blazer, and i need some info on what could be. It showes it more when i turn on the AC, if i step on the gas, the engine will stall, i have to accelerate little by little but the things it that this doesn´t happen always but the true things is that it happens more often when the AC is on. I was thinking on buying some stuff, normal tune up (headers (need some help here on what to buy),spark plugs wires, better spark plugs (have any idea???, busch super 4 or NGK, split fire, etc or any good plug because i was thinking on getting a crane cams ps91 coil and the fire ball hi-6 to get more spark power and i dont know if the spark plug have to be compatible or what, also a k&n filter. My main idea is to get some lost horses back without a gas milleage cost. Well if anyone have any idea, all of them are welcome.

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post #2 of (permalink) Old 09-12-2000, 05:58 PM
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Re: unpowered Blazer s-10 4.3L 4x4

Sounds like you need to get it running properly before you start modifying it. Check to make sure there are no leaks in your intake plumbing, even a tiny leak could mess up the mixture and make the pulloff difficult. Check for obvious breaks or cracks in the intake rubbers, then check closer for the small stuff. I'm sure others might have different ideas to help you out.

post #3 of (permalink) Old 09-12-2000, 07:01 PM
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Re: unpowered Blazer s-10 4.3L 4x4

A full tune up with plugs/wires/cap/rotor to start with! and look & listen for vacuum leaks. If these don't do it try fuel filters. But I bet the tune-up fixes it![img]/wwwthreads_images/icons/smile.gif[/img].
For parts, I like to just use stuff from Autozone, Checker, Pepboys. Almost everything has a lifetime warranty and you can easily get the warranty honored.
"Mail Order" is a PITA, you have to wait, then if it's wrong... then for warranty... just not worth the hassle!
PLUGS Don't waste money on expensive plugs! any platinum plug will be fine, and you will not notice any difference between a $1 a piece and a $6 a piece plug.
CAP & ROTOR Any brand with "brass contacts" are great! The real cheapies have aluminum or steel contacts, don't get those!
WIRES I like the "autolite" ones they are very good and have a lifetime warranty (I think Checker sells them).
You can buy all this stuff for around $50 to $60.
or you could buy all the fancy sh!t for well over $100 and you will never know the difference.
I agree with Martian, "get it running right first! then do your mods", also a K&N filter is always good. But NOT their open element cleaner!

Also your AC has nothing to do with your problem, it is just more drain, on an already hurting engine, so you notice it more!

Scooby Dooby Doo !!!
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post #4 of (permalink) Old 09-12-2000, 08:39 PM
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Re: unpowered Blazer s-10 4.3L 4x4

Just for kicks, check the timing before you do the tune-up and see if it is off. The connector that has to be unplugged to check/set the timing is under the top edge of the carpet on the passengers side. (Brown with Black tracer)

'91 S15 Jimmy 5.7L 4X4
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post #5 of (permalink) Old 09-12-2000, 10:27 PM
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Re: unpowered Blazer s-10 4.3L 4x4

While you do that tune up you let go for 5 years, check the elctric fuel pump pressure. It's a Gremlin that a lot of people over look till they fork out a buttload of money on everything else, Tom

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