Questions and Answers

S-10 Questions Q. Hi, Vince. I own a 1985 Chevrolet S-10 with a 2.8 V-6 and 2SE Varajet. It also has automatic transmission and air conditioning. What I'd like to do is simply get rid of all the "junk" cluttering up my engine compartment so that I can actually see my engine.

Basically, I'd like to simplify the emission controls to just PCV, EGR, and the purge/vent canister.I'm definitely removing the A/C system to free up some room (it hasn't worked in a decade) but I'd also like to remove the AIR pump. How would my emission controls be simplified by removing these two pumps? Would simplifying my emissions affect engine performance? Basically, what are the bare-essentials of the emission controls for proper engine operation?

I have another question pertaining to the same vehicle. How do I tell if my accelerator pump is bad. I'm not sure if it is but when I accelerate onto the highway (pedal is nearly floored) the truck takes a very long time to pickup speed. The engine works slowly at first but gradually increases rpm's when the pedal is depressed quite far. I found no vacuum leaks, plugs were in excellent shape, brakes have normal drag, new cap and rotor, cleaned the carb, no problems with linkage or levers, and the air and fuel filters were just replaced. Could this be related to the accelerator pump or possibly the choke setting?

Sorry for the wordy questions but I hope you can help me out.

Thanks!!

A. Oh how we would all love to do this. if you dig deep enough you will find an engine under all those hoses and lines.

Any modifications or disabling of any of the emission control systems is a violation of federal law. Believe me, if those components were not necessary or required, the auto makers would not put them on. On some cars they are such an intergral part of the fuel system, the engine will not run, or run very poorly, with them disconnected. In addition, if your state has a mandatory emission test as part of the inspection, you will fail it.

As much as it is a PITA, I would not recommend removing any of the emission control devices.

The only symptom of a bad accelerator pump is this; when you step on the gas, the engine will severely bog down. Almost like it's running out of gas. The purpose of the accelerator pump is to give the engine a quick shot of fuel to get the engine up to speed so you can, you guessed it, accelerate.

The problem you describe can probably be attributed to the timing being off somewhat or the fuel mixture being too lean.

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