My 2007 Mustang GT Rebuild...
Has hit the wall, caution has been thrown for debris. And the red flag is now out and the
RACE Tune Up has turned into a full blown Rebuild.
The Debris was not on the race track, it was found inside the engine. That is NEVER a good place to find debris.
A few years back, @pooky-jax was on her way home. The Mustang made a horrible metal on metal sound.
The car stalled on her. She restarted it, the car ran very badly. She limped home in 2nd gear.
Now here is where this broken valve spring, rockers, and stuck open valve gets weird. I arrived home. Started the car, then ran the shit out of it. The car was clearly not running normal. I could not reproduce the sound it made when the valve, rockers and spring broke. We drove the car quite a bit over the next few months. It ran quite well for an intake valve failure.
We did not know at the time it was mechanical failure, a borderline hand grenade ready to blow up at any time engine.
The engine was throwing a misfire on cylinder # 3 code. As well as all 4 o2 Ox Sensors, it went a long time (months) before it started throwing the CEL. (√ engine light)
So the tune up began. New sensors, plugs, coil packs, MAF, injectors.
The Compression √...
The engine savvy that may read this will spot my mistake right away. I changed spark plugs and did not do a compression test/leak down test. A very easy and inexpensive test. Only after several hundred dollars and many hours, parts and ECM tunes.
(tunes = computer logging and electronic control module reprogramming)
A "dead cylinder" is a zero compression result. Well cylinder (piston) number three is... Ziltch, Zero, Nadda and...
Earlier in this story we witnessed the "Debris" that this OHC 3 valve (OHC = overhead cam) mechanical valve systems failure left behind. But how much of it are we not seeing?
This motor is toast. It is done, gone, stick a fork in it. And a week before the failed comp test, and photos of the broken pieces. I drove it to the gas station. Then ran it thru several WOT's. (WOT = Wide Open Throttle)
I am amazed that the valve did not drop down, knock a hole in the piston and result in the "Grenade" effect that I keep referring to. I have literally blown an engine apart before that dropped a valve and knocked a quarter sized hole in a piston where the resulting combustion explosions into the crankcase ignited like a bomb.
So What Now..?
We, @pooky-jax and I, have owned this 2007 Stang longer than any other vehicle in our lifetime. So we have decided to step back, take a deep breath and do a total rebuild. Not with the metal fragment filled engine that I removed earlier this week.
We will replace the OEM stock FORD 4.6 OHC 3V. With this fresh COBRA Engine.
Last week I posted about my love for
CATS Cars on The #WEEKEND-ENGAGEMENT
This week I am showing my love for cars again.
For Me personally,
Working on cars really is fun. I enjoy working on them almost as much as cruising in them.
Just ask my KrazzyKitty
Meow-Cat-Nics helper, Sammi Jo.
Thanks for the inspiration to write this post.
17 years is a long time to own a vehicle. Must be some love there?
As always, Thanx for stopping by, and...
Keep on KrazzyTrukkin'