The Ford Barn

bobH · 07-12-2018, 03:57 PM

Looking for ideas. Engine has been running fine. Suddenly one day, it won't start. Checking a couple simple things, starter turns it over fine. Adding a 12V jumper (6V system) was no help. Cranking with starter, it sounds like no compression. Compression check (with spark plug gauge) shows zero compression on 5 cylinders, and 'normal' (around 100) compression on one cylinder (#4). Turning crank by hand, forward direction, and bringing #1 up to TDC, I see that the rotor is pointing to the #1 plug wire. This suggests to me that the crank is turning the cam, and distributor, as it should.
(It's got spark and fuel, no problem there.)
Looking for the engine guru's, engine 'whizzes' to see if anyone can come up with ideas on what to check for next. How can it suddenly have zero compression on five cylinders, and normal compression on one cylinder? Especially, when the day before, it was running fine on all six cylinders.

meric42 · 07-12-2018, 04:09 PM

Which version of the 6 are you working with, 1GA, 2GA or H series?

George/Maine · 07-12-2018, 04:31 PM

I would guess the camshaft is broken near the front or timing chain bad

petehoovie · 07-12-2018, 04:38 PM

What George/Maine said above....^

FlatheadTed · 07-12-2018, 04:40 PM

Pull the side cover so you can look at the valves ,maybe some stuck open ,it could be a head gasket also

Bob C · 07-12-2018, 05:44 PM

Sponsored Links (Register now to hide all advertisements)

There was the same thing on the Model A board, see post 42 and 46 for cause.
https://www.fordbarn.com/forum/showthread.php?t=247567

Bob

bobH · 07-13-2018, 03:10 PM

Quote:

Originally Posted by Bob C

There was the same thing on the Model A board, see post 42 and 46 for cause.
https://www.fordbarn.com/forum/showthread.php?t=247567

Bob

Wouldn't that be something? This car is new to me, and I don't know any of its history. A bunch of goo would be something I would never think of.

07-12-2018, 04:09 PM	#2
meric42 Senior Member Join Date: Aug 2010 Location: Blenheim, New Zealand Posts: 877	Re: No start, no run, sudden, flathead six Which version of the 6 are you working with, 1GA, 2GA or H series? __________________ I need an 01A 1453 Brkt Spare wheel hold down for my sedan delivery - PLEASE HELP Gotta love my '42 Sedan Delivery's - Now that I own the only two in New Zealand https://www.fordbarn.com/forum/album.php?albumid=580

07-12-2018, 04:31 PM	#3
George/Maine Senior Member Join Date: May 2010 Location: Mid coast Maine Posts: 1,878	Re: No start, no run, sudden, flathead six I would guess the camshaft is broken near the front or timing chain bad

07-12-2018, 04:40 PM	#5
FlatheadTed Senior Member Join Date: May 2010 Location: Auckland Posts: 4,700	Re: No start, no run, sudden, flathead six Pull the side cover so you can look at the valves ,maybe some stuck open ,it could be a head gasket also __________________ http://www.flatheadted.com Flathead Ted brake Floaters ,

07-12-2018, 05:44 PM	#6
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,741	Re: No start, no run, sudden, flathead six Sponsored Links (Register now to hide all advertisements) There was the same thing on the Model A board, see post 42 and 46 for cause. https://www.fordbarn.com/forum/showthread.php?t=247567 Bob

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

07-12-2018, 03:57 PM	#1
bobH Senior Member Join Date: May 2010 Location: so cal, placerville, vegas Posts: 1,394	No start, no run, sudden, flathead six Looking for ideas. Engine has been running fine. Suddenly one day, it won't start. Checking a couple simple things, starter turns it over fine. Adding a 12V jumper (6V system) was no help. Cranking with starter, it sounds like no compression. Compression check (with spark plug gauge) shows zero compression on 5 cylinders, and 'normal' (around 100) compression on one cylinder (#4). Turning crank by hand, forward direction, and bringing #1 up to TDC, I see that the rotor is pointing to the #1 plug wire. This suggests to me that the crank is turning the cam, and distributor, as it should. (It's got spark and fuel, no problem there.) Looking for the engine guru's, engine 'whizzes' to see if anyone can come up with ideas on what to check for next. How can it suddenly have zero compression on five cylinders, and normal compression on one cylinder? Especially, when the day before, it was running fine on all six cylinders.

07-12-2018, 04:38 PM	#4
petehoovie Senior Member Join Date: May 2015 Posts: 8,072	Re: No start, no run, sudden, flathead six What George/Maine said above....^ __________________ The only thing nice about being imperfect is the joy it brings to others.... *"Silver rings, your butt! Them's washers!"* "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0