p0300

In the past, younger years

My "Pals"

Have "Helped me out"

By swapping plug wires on me while I was at a store.

first time was a killer and made me sick as to what was wrong with my Jeep for quite some time.

(Kind of bad when you "rule out" something that surely could not change itself- ever since, I do not rule out anything!)

second time it was not too bad now that I knew the deal.

Shifting my transfer case into neutral was another trick they pulled on me while I was occupied elsewhere .

Check the turning of your rotor button for smoothness (not jumpy as it rotates- gear or cam problem)/ insure the distributor hold down has not let the distributor turn (changing the timing setting).

Check for other codes

Keep us posted

The Medic

Hey ETHAN,

I have seen where the EGR valve is stuck open causing a massive internal vacuum leak, can you remove the valve and see if there is carbon stuck in it? or if the valve is damaged in anyway? Please get back to me. Also the fuel injector unit in those engines had big problems too be lets start with the easy check first.

Best, Ken

I removed the egr then cleand the valve still no fix when running smells real rich but it wont idle by its self I have to keep a little throttle and after running for about ten minutes you can smell rotting eggs sure sign of fuel not combusting so I'm thinking there's a leak in one of the injectors?

It sounds like the fuel pressure regulator diaphragm has let go, can you remove the top of the intake to check it, they have big problems with those injector units in those engines.

Best, Ken

I replaced fuel pump gas tank because old one had leaks so fixed that gas lines fuel filter its running like it has a mild camshaft

Still no fix

And I haven't checked the injectors yet its got a sfi how do I go about checking that

You must remove the top in the intake manifold because it is inside of it

It turns out the right cylinder bank is all low compression in getting a used motor and tranny for it if I get the same motor would it all just plug in and start

Thanks for getting back to us, yep it happens sometimes the engine just wears out, please let us know how the installation goes.