New owner here...a few questions??

SY2767

Member
I just picked up my sy and i have a few questions. What should the fuel pressure be? Does it use the same oxygen sensor as a regular 4.3? What spark plugs should i use in it? I am giving it a good tune up and would like to know what to check or look for. It has an adjustable fuel pressure reg and that's all i can tell under the hood that's not stock, any help would be great. :tup:
 

Jimmy

Banned
Re: New owner here...a few questions??

Fuel pressure depends on what chip and injectors you have> Generally stockish or 50's run 40-45 psi.

The oxygen sensor is not standard S-10.It's a 3-wire preheated sensor,should run you around $50 at Auto World,so if they try to give you the $19 one,it's not the correct one.
 

ZMann

vertically challenged
Re: New owner here...a few questions??

As for spark plugs the stockers are cr42ts. However i just put in NGK ur5 or 6's.... the cheap kind. 1.19 a piece i think. They won't be in long. But they work.
 

SeattleSy#1255

Category 5 Conservative
Re: New owner here...a few questions??

ZMann said:
As for spark plugs the stockers are cr42ts. However i just put in NGK ur5 or 6's.... the cheap kind. 1.19 a piece i think. They won't be in long. But they work.

I ahve had much better luck running ngk ur5's over the cr42's
 

Tophatjimmy

Syclone FNG
Re: New owner here...a few questions??

I wonder about what you guys do to your trucks sometimes...
I got Autolite 8mm wires, Autolite Platinum Plugs and a Borg-Warner cap and rotor (all from Schucks) and they have performed flawlessly for over a year and a half. I have a small stumble at idle, but it's nothing worth complaining about.
I checked the plugs about a month ago and they were barely discolored and the gap was still where I had set it at.
How do you guys chew up so much ignition stuff??
 

SeattleSy#1255

Category 5 Conservative
Re: New owner here...a few questions??

Tophatjimmy said:
I wonder about what you guys do to your trucks sometimes...
I got Autolite 8mm wires, Autolite Platinum Plugs and a Borg-Warner cap and rotor (all from Schucks) and they have performed flawlessly for over a year and a half. I have a small stumble at idle, but it's nothing worth complaining about.
I checked the plugs about a month ago and they were barely discolored and the gap was still where I had set it at.
How do you guys chew up so much ignition stuff??

I don't know, but my truck eats cap/rotor sets like a dog eats his own shit.
 

SY2767

Member
Re: New owner here...a few questions??

The local gm dealer says the pcv valve for my truck has been discontinued, whats another part# i can use or would one from nappa be just as good? Are the special for our trucks? also..... my truck has "ricer" tail lights. I got a set from the local wrecker from a jimmy but they don't seem to fit, are the pickup lights different?
 

gjp

another post whore
Re: New owner here...a few questions??

PCV is a ACdelco CV799C 8995910 you need 2.
 

SY2767

Member
Re: New owner here...a few questions??

Thanks! Anyone recommend a certain brand of oxygen sensor? Part # ?
 

gjp

another post whore
Re: New owner here...a few questions??

Bosch o2 sensor #13077. I think thats the stock one. Napa caries them
 
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