shamdave

Here we go vett detectives here are the facts

Put in a new radiator no problems
took it out on a drive ran great

Suddenly water temp climbed from 140 to 200-210

Then driving down the road about 70 started to loose power and died Opened the hood smoke was rolling out from multiple places (kinda white ish)

Checked the oil and had little to none
would not rerfire

took it home on a roll back

Cranked by hand with wrench
Distributor moves as do the lifters
No oil in water and no water in oil

Has fuel pressure like normal also has oil pressure while cranking


Changed
Oil pressure sending unit
Dist Cap
rotor button
Dist Control module

Cranks but will not fire. (same as before

I have not checked the spark yet nor the fuel injector pulse.

Please any ideas are appreciated

ANTI VENOM

Something isn't making sense.

shamdave

Yup, its a head scratcher So any one have questions comments that can help me figure this out?

LT1_383

What did the smoke smell like? Burnt insulation or coolant? I would be concerned where the smoke came from first and what was the cause. After that, it's all about fuel and spark. You say that you have fuel pressure. What is the reading? Next check for spark. Then folks can help you from there.

trackbird

Check for spark and do a compression test.

shamdave

dont recall the smell of the smoke amd doing a compression spark and node light on the injectors this weekend

shamdave

Tested one cylinder and had about 5psi, also no spark...I am no master tech but I think that's bad

trackbird

Yea, I'd consider 150 psi to be on the low side, but likely "functional". If you're seeing 5 psi, it's going to have to come apart. I'd try to get it out on a stand and start from there.

shamdave

Yup Im not even worried about the no spark at this point. she is terminal not sure if I want to rebuild or replace.

DanielRicany

It's probably getting passed the rings but just to confirm I would do a leak down test and listen to hear where the air is coming out from. Who knows, maybe something messed up with a valve.

ViperC4

it sounds like a broken timing chain to me.

shamdave

Really? The dist turns and the lifters move when i crank it by hand? would it still do that with a broken Timing Chain

trackbird

Nope.

There are only a few ways to lose virtually all compression. Rings, valves, pistons and gaskets. If it overheated and started to knock, the rings can be broken (I've pulled them out of one of my old engines in about 1" long sections where they shattered from knocking). If it seized a valve due to lack of oil and heat (or a broken timing chain can do that as well, but yours isn't broken), also no compression (but try a few other cylinders and see if they are all the same). Dead head gaskets (usually you'll get "some" compression and often some water). Or there's a hole in a piston (less common).

Did you try compression on more than one cylinder?

shamdave

Nope havent had time (working on my racing mower, yeah you heard me) I will keep you posted

MrWillys

I agree ^

MrWillys

It most likely jumped a couple teeth, so yes.

DanielRicany

I think a leakdown test would tell you where its leaking from.