Crazyfast50stang

Hey I need to replace this part because the bolt is stripped on it. When I unscrewed it it was fine until i tried screwing it back on. Its the rusty one.

[IMG]local://upfiles/7058/6FD87214EB28425C9DC64BE16E37E40F.jpg[/IMG]

grabbem88

that looks like what deals with your smog pump...i discarded all that crap....sorry i called it junk..

C/Note

EGR VAVLE

Crazyfast50stang

ok how important is that egr valve? What does it do?

91hatchgt

It is very important if you must pass emissions.. Also our engines were designed to run with EGR and emissions crap, so if you want to get rid of it, you must get rid of the entire emissions system... It reintroduces unburned fuel through the engine for one more pass for pollution reasons.. I know all about it because I live in California! [:'(]

tomabram

EGR serves one purpose and one purpose only. That purpose is to

reduce Oxides of Nitrogen. Under normal combustion, Nitrogen

Oxygen in the air and Hydrocarbons in the fuel combind into water

Carbon dioxide and the Nitrogen remains unchanged. Under very hot

combustion temperatures, the Nitrogen reacts with the other two byproducts and

forms Nitrogen oxide. After being released into the atmosphere, it picks up

another Oxygen and becomes Nitrogen dioxide. In the presence of sunlight,

it combines with other compounds like Hydrocarbons and forms Smog. Since

exhaust gas is inert (very stable) it doesn’t burn again. So by being introduced into

the combustion chamber, it will lower combustion chamber temps enough so that

the Nitrogen doesn’t react with the other compounds and is passed unchanged out

the tailpipe thus not contributing to smog. Now, since exhaust gas doesn’t burn, it

doesn’t exactly help with combustion. At higher RPM’s, this really isn’t noticable,

but at idle, the reintroduction of exhaust gas will cause a very rough idle and can

cause stalling if to much is introduced into the combustion chamber.

Crazyfast50stang

yeah good to know because I live in california also.