smoking 360

Engine, ignition, fuel, cooling, exhaust

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Finleyphoto
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re: smoking 360

Post by Finleyphoto »

Sudden thought...

Could this engine have sucked the intake gaskets from the bottom creating an internal vacuum leak...???

Is the intake aluminum or cast iron?


Dennis
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Re: re: smoking 360

Post by dolinick »

DuckRyder wrote:Do you think it could be a solid lifter cam?

In your other videos it sounds like it might be...

There are a couple other clues in your last post.

Does the timing stop advancing at "close to 30" if you continue to raise the RPM?
It seemed to when the vacuum line was plugged.
I forgot to remove it at first and it advanced way
past the 30. Then I plugged it and at idle it was
about 14 and up to 30 when I revved up the engine.
I believe it stopped at 30. I dont want to give the
wrong info however.

Dan
2003 7.3L F250
1968 F500 Utility Truck
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Re: re: smoking 360

Post by dolinick »

Finleyphoto wrote:Sudden thought...

Could this engine have sucked the intake gaskets from the bottom creating an internal vacuum leak...???

Is the intake aluminum or cast iron?


Dennis
It is aluminum.
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1968 F500 Utility Truck
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re: smoking 360

Post by Finleyphoto »

Has the intake been off since you had it? Or has it been 3 years?

If the smoke is oily, I'd say it's just the rings are gummed up from storage.

There is some kind of metal rattle inside the engine on the YouTube vid.

How's your oil pressure?


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Re: re: smoking 360

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Finleyphoto wrote:Could this engine have sucked the intake gaskets
That thought crossed my mind, we may need to explore that if the firing order is correct and it is still skipping after separating the wiring. The red silicone all over the front block rail isn't promising...

I don't hear the metallic knock in the video from under the hood, of course a video is no substitute for actually hearing it, but I am thinking that it is the muffler.

Dan, less than 30 is not enough. It is also idling so fast that the initial is not accurate because the weights are already advancing the timing.

When you say the oil pressure is in the white, you have the factory gauge package with "L" and "H" on it? The needle is in the middle? Or in the white area near "L" or "H"? Or something else?

Do you know who built the engine, and can you contact them to find out if it is a solid cam?
Robert
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)

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Re: re: smoking 360

Post by dolinick »

DuckRyder wrote:
Finleyphoto wrote:Could this engine have sucked the intake gaskets
That thought crossed my mind, we may need to explore that if the firing order is correct and it is still skipping after separating the wiring. The red silicone all over the front block rail isn't promising...

I don't hear the metallic knock in the video from under the hood, of course a video is no substitute for actually hearing it, but I am thinking that it is the muffler.

Dan, less than 30 is not enough. It is also idling so fast that the initial is not accurate because the weights are already advancing the timing.

When you say the oil pressure is in the white, you have the factory gauge package with "L" and "H" on it? The needle is in the middle? Or in the white area near "L" or "H"? Or something else?

Do you know who built the engine, and can you contact them to find out if it is a solid cam?
it is near the L on the factory guage. It only moves alittle to the very
start of the white area. I can contact the previous owner about the cam.
I'm not sure if he knows.
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Re: re: smoking 360

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dolinick wrote: it is near the L on the factory guage. It only moves a little to the very start of the white area.
That isn't good... even when the RPM is raised it is still near "L"? Does it have the sender out of the original engine?

Stupid question... It has plenty of oil in it right? In fact overfill it a quart...

dolinick wrote:I can contact the previous owner about the cam.
I'm not sure if he knows.
It would be nice to know:
What cam is is and is it solid or hydraulic
What valvesprings
What kind of rockers (adjustable.)
What is the compression ratio (piston brand and number)
Robert
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re: smoking 360

Post by DuckRyder »

I took the liberty of asking for shop recommendations on the FE Forum:

FE Forum
Robert
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)

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Re: re: smoking 360

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DuckRyder wrote:I don't hear the metallic knock in the video from under the hood, of course a video is no substitute for actually hearing it, but I am thinking that it is the muffler.


I agree, the video quality is deceiving, but I hear metal rapping.

Be it solid lifters, low oil pressure or a rod knocking, I can't tell.

It's gonna be hard to diagnose this one without seeing "the patient"

Has he answered my question if the smoke is oil or gas?

Maybe he needs to pull the valve covers for a visual inspection? (Then maybe the oilpan...???)


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re: smoking 360

Post by Finleyphoto »

DuckRyder:

Been 20 years, but I remember the old timers telling me your had to be careful about milling the heads on these engines because it would cause the intake to not mate up properly and leave a gap at the bottom.


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Post by Zephyrmec »

Dennis, is this "old man Cullen" from the Houston area and family originally from NY? (possible cousin)
See what doing all the things your parents warned you against causes when you get old?
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Re: re: smoking 360

Post by DuckRyder »

Finleyphoto wrote:DuckRyder:

Been 20 years, but I remember the old timers telling me your had to be careful about milling the heads on these engines because it would cause the intake to not mate up properly and leave a gap at the bottom.


Dennis
That is basically true... You can mill the intake as well if you know what you are doing.

Fel Pro intake gaskets (particularly the "Perma Torque") can be rather problematic too...
Robert
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Re: re: smoking 360

Post by dolinick »

DuckRyder wrote:
dolinick wrote: it is near the L on the factory guage. It only moves a little to the very start of the white area.
That isn't good... even when the RPM is raised it is still near "L"? Does it have the sender out of the original engine?

Stupid question... It has plenty of oil in it right? In fact overfill it a quart...

dolinick wrote:I can contact the previous owner about the cam.
I'm not sure if he knows.
It would be nice to know:
What cam is is and is it solid or hydraulic
What valvesprings
What kind of rockers (adjustable.)
What is the compression ratio (piston brand and number)
Honestly I only looked at the oil pressure guage while the engine
was idling. I had put almost six quarts in it already. Five quarts
plus one I had opened already but was almost full.

I called an engine shop today and tried to explain it to him.
He wanted to make sure my ignition was 12 volts and not 4 volts.
The stock ignition on a '71 is 12 volts isn't it. Maybe he was
confused with another year of vehicle. Also he said I should
drain the gas tank and use some good gas. I already have
about 12 or 13 gallons of fresh gas mixed with whatever old
gas was in the tank for 3 years.

I'll PM the guy I bought the engine from and see if he can get
me some more information about the cam, springs, rocker, and
pistons.

I'm trying to imagine if the smoke smelled oily or gassy. It
was definitely a distinctive odor. I couldn't say for sure.

Anyway, I bought a $30.00 Tachometer and a volt meter.
If I can get the truck to start I'll check the timing with the
tach. Maybe I'll be able to adjust the mixture screws.
I am still concerned that there is something else wrong
other than tuning.

This is new! I noticed the black wire that goes to the distributor
was not grounded. There is a red wire, a brown wire and a black wire.
I believe the red and brown go from the coil to the distributor.

Dan
2003 7.3L F250
1968 F500 Utility Truck
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Post by Finleyphoto »

Zephyrmec wrote:Dennis, is this "old man Cullen" from the Houston area and family originally from NY? (possible cousin)
Nah, he had a shop here in Fort Worth for years.

I think his first name was Sewell.


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Re: re: smoking 360

Post by Finleyphoto »

dolinick wrote:I'm trying to imagine if the smoke smelled oily or gassy. It
was definitely a distinctive odor. I couldn't say for sure.
Use your finger to wipe the inside end of the exhaust pipes (before you get them hot)

See if it's half burned motor oil.


Dennis
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