DeTomaso Mailing List: May 2000, Message #11

I have swapped wires from 4 and 8 to other cylinders and 4 and 8 still miss.

Even though 4 and 8 produce no power at idle, the plugs look pretty good. 
I have run with three carbs with the same result each time.
I have replace rotor and distributor cap.
Everything except the short block has been replaced and I still have the
same result.
We ran the engine directly off of the battery to element any electrical like
ignition switch.
We even tried the 302 firing order just for kicks.  You know when you have
the wrong order believe me.

Is there any test for the cam other than lift?  How about crank?

-----Original Message-----
From: Franck DJ (Don) [mailto:DJFranck@equilon.com]
Sent: Monday, May 01, 2000 10:22 AM
To: djfranck@equilon.com
Subject: [CM:21852] The persistent miss problem with 351 Windsor


Okay,  We have done compression test with a low of 140 high of 150.
Done a Leakdown and it is okay.
Changes heads
Changes distributor
Changed Intake manifold
Changed Coil
Changed spark plugs and wires
Triple checked the firing order IT IS CORRECT
Changed the Spark plug wires around.

After each of these steps, I get the same results.  It now seems to me that
the problem must lie in the short block.

I still have a very bad miss at idle  If I pull the plus wires on 4 and 8,
there is no difference at idle.  This is a 351 Windsor and 4 and 8 are next
to each other in the firing order so I get a VERY BAD vibration at idle.

It does seem to me the I get the most power from 1 and 5 with progressively
less power from both sides as I work my way to the back of the engine.

My vacuum is about 19 with a wobble.

I have had two suggestions.

One - the crank is twisted????
Two - I have a bad cam????

I figure I can change the cam for around a hundred bucks.  The crank is a
different story.  

WHAT SHOULD I DO???????

Don Franck
DJFranck@equilon.com
1971 Pantera #1777 /  1969 Mustang Mach 1 
Wk 713-346-3211 / Wk Fax  713-241-8234
HM 281-856-8049 / Hm Fax  281-859-9531
http://www.geocities.com/MotorCity/Downs/9415
"Some people said it couldn't be done.  What they meant was "They couldn't
do it".



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