Fresh Engine. Low Compression

elarm1

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#41

• Apr 16, 2014

• #41

I'd take off that chip and try to start it again

 

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FoxMustangLvr

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Apr 16, 2014

#42

• Apr 16, 2014

• #42

elarm1 said:

I'd take off that chip and try to start it again

Click to expand...

True, i've heard tunes having a bug in them and dumping too much fuel. However, damage might already be done from all the blow by he's getting.

 

DesertDawg

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#43

• Apr 16, 2014

• #43

No damage possible from a supposed 'wash down' as he calls it. I'm awaiting the base cause of the problem right along with the rest of you.

 

a91what

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#44

• Apr 16, 2014

• #44

the car would not start without the chip. lightning maf is not sized to an injector the program has to be written to the injector size.

DesertDawg said:

No damage possible from a supposed 'wash down' as he calls it. I'm awaiting the base cause of the problem right along with the rest of you.

Click to expand...

what else would cause fuel in the oil? i would llike to know. if you have another explaination. lets hear it.
For what its worth the oil on the cylinder wall acts as a substrate and the rings hydroplain across that substrate, without the oil on the wall the rings are subject to metal on metal contact wich in turn causes alot of wear fast.
More than likely the wash down occured after the damage was done i will only know aftwr the teardown.

 

GroverDill

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#45

• Apr 16, 2014

• #45

Whatever happened, good luck getting it figured out and resolved.

 

elarm1

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#46

• Apr 16, 2014

• #46

Flooding puts gas in the oil. Starting it over and over with no fire, fuel has gotta go somewhere!

 

a91what

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#47

• Apr 16, 2014

• #47

i agree but i wish you could see all the air. its like my crankcase is a compressor..... i **** up somewhere.

 

elarm1

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#48

• Apr 16, 2014

• #48

But it started an ran for a while right?

 

a91what

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#49

• Apr 16, 2014

• #49

i put trans fluid in the spark plug holes and turned it over. then put plugs in and tried again. never tried to start ittoday. just that

 

89oem

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#50

• Apr 16, 2014

• #50

hope its easy to fix when you get in there!

 

elarm1

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#51

• Apr 17, 2014

• #51

update? @a91what

 

a91what

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#52

• Apr 17, 2014

• #52

sorry had school today and its not so sunny here in fl. hopefully tomorrow, i might try toget it to fire........ but i think im grasping at straws.

 

gearheadboy

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Apr 17, 2014

#53

• Apr 17, 2014

• #53

I'm not seeing the PTV clearance as being checked properly. It has no compression. Bent valves? Timing chain jumped? Back the rockers off on one cylinder and air that cylinder up. See where the air comes out. Intake..Exhaust..or crankcase. The fuel in the oil is because it isn't burning it. It either is getting a ton of fuel and no spark or compression or it bent the valves causing no compression..OR it jumped time. Wind #1 to TDC and pull the cap and see where the rotor points. If the timing events are off it will wash the cylinders down.

 

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#54

• Apr 17, 2014

• #54

gearheadboy said:

I'm not seeing the PTV clearance as being checked properly. It has no compression. Bent valves? Timing chain jumped? Back the rockers off on one cylinder and air that cylinder up. See where the air comes out. Intake..Exhaust..or crankcase. The fuel in the oil is because it isn't burning it. It either is getting a ton of fuel and no spark or compression or it bent the valves causing no compression..OR it jumped time. Wind #1 to TDC and pull the cap and see where the rotor points. If the timing events are off it will wash the cylinders down.

Click to expand...

This is all the information you need to have for right now.
Everything else is just over complicating the situation. Troubleshoot 1 thing at a time.
Hopefully it's a cheap fix!

 

a91what

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#55

• Apr 17, 2014

• #55

i already said i did that... came out crankcase.

 

gearheadboy

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#56

• Apr 17, 2014

• #56

a91what said:

i already said i did that... came out crankcase.

Click to expand...

Rockers backed off? And did you check the distributor with it on TDC? To make sure it hadn't changed?

 

90lxcoupe

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#57

• Apr 18, 2014

• #57

gearheadboy said:

I'm not seeing the PTV clearance as being checked properly. It has no compression. Bent valves? Timing chain jumped? Back the rockers off on one cylinder and air that cylinder up. See where the air comes out. Intake..Exhaust..or crankcase. The fuel in the oil is because it isn't burning it. It either is getting a ton of fuel and no spark or compression or it bent the valves causing no compression..OR it jumped time. Wind #1 to TDC and pull the cap and see where the rotor points. If the timing events are off it will wash the cylinders down.

Click to expand...

If i had to guess id also go with bent valves. The way i read the posts, the PTV clearance failed with stock pistons and he didnt check PTV clearance with the new pistons because those same pistons cleared with a .620 lift cam. Lift isnt the only factor on PTV clearance unfortunately.

 

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gearheadboy

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#58

• Apr 18, 2014

• #58

90lxcoupe said:

If i had to guess id also go with bent valves. The way i read the posts, the PTV clearance failed with stock pistons and he didnt check PTV clearance with the new pistons because those same pistons cleared with a .620 lift cam. Lift isnt the only factor on PTV clearance unfortunately.

Click to expand...

That's how I read it too.

 

a91what

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#59

• Apr 18, 2014

• #59

yes i did check to see if the dizzy moved to. even had a couple friends come over and help. they said it was just a ford thing. #$%#*$& chevy guys. although i still havent ruled bent valves out. i hope its not i Spent weeks porting the heads.

 

RacEoHolic330

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#60

• Apr 18, 2014

• #60

I will add that when I started my brand new setup for the first time, it was running so rich that my eyes were watering. The plugs were wet and black and the dipstick wreaked of fuel. I changed the oil and there was at least a half quart of fuel in the oil. I leaned things out and started it again and it ran much stronger. No signs of compression issues. I also believe you may have something else going on here.