Re: 95 blazer engine failure

On Jun 28, 10:20 pm, Comboverfish <comboverf...@xxxxxxxxx> wrote:
On Jun 28, 11:53 pm, stevekb...@xxxxxxxxxxx wrote:



Thanks to all in advance for replying. 95 Chevy Blazer 4.3l Vortec,
240000km. (Lemon by the way) Nothing but problems since i've owned it.
Anyhow that's another story.Was coming home from a camping trip the
other day and the following happened...
-towing lightweight trailer (1400lbs)
-at start of incline engine seemed to have less power than usual
(didn't really think much of it)
-noise came from engine and vehicle stalled
-engine temp was pretty high, oil was hot
-strong gas smell from under hood
-seemed like small amount of gas had somehow come up from the intake
and oozed out of plastic air intake ???
-with lighter in hand, ready to go, I checked my insurance to see if I
had fire coverage on the vehicle (DAMN - I didn't)
-tried to restart, but starter wouldn't turn over engine
-figured engine may be seized. tried to hand turn pulleys and turn
over with starter for about an hour, but to no avail (heard that this
may help to prevent the engine from permanently seizing-don't know if
there's much truth to that)
-about an hour later, tried to start vehicle again with starter and it
turn over a couple of times, and seemed to almost start, but stopped
abruptly as if something jammed it (audible noise with this)
-again engine seemed to be seized
-was able to get it to turn over later with starter (maybe one
revolution), but seemed to jam again
-eventually fried starter
-expensive tow bill back to town (2 tow trucks for blazer and trailer)
from way out in the boonies
-no obvious fluid coming from vehicle
-bit of gas smell in oil, but not too bad
- no loss of coolant, no oil in coolant
I have a bit of experience with auto repairs (I seem to sniff out
lemon vehicles) but nothing with engines or this type of problem
Any suggestions with what might have gone wrong with the engine or
things to check out
Does something like this seem fixable (by myself) I could probably
figure things out, but does it seem more likely that an engine
replacement or rebuilt may be necessary
Just want to get it running again - then FOR SALE
Already lost so much money on this vehicle
Thanks... Steve

It mostly sounds like your CPI injector solenoid has stuck open, thus
way overfueling every cylinder and hydrolocking the engine. Pull the
fuel pump relay and try to crank the engine after a long sit. See if
it continues to crank without locking up during a no fuel delivery
condition.

The external fuel leak you eluded to is not uncommon for this design,
but in and of itself I don't know how an external fuel pipe leak or
ruptured regulator leak would cause the engine to lockup. Perhaps you
have two problems, or you didn't really see a pressure side fuel leak,
rather an intake backfire of liquid gas from the cylinders.

Anyhoo, this CPI assembly is under the intake plenum.

Toyota MDT in MO

I replaced the entire CPI assembly two months ago with a new AC DELCO
one. Still might be this??? Thanks again for the input. Very
interesting. I'm going to take off the upper intake plenum and check
it out tomorrow. Will have to go and buy a starter to try and crank
engine

.

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