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misfiring #398626 11/22/17 01:17 PM
Joined: Jun 2013 Posts: 33 Northern Ireland Eliza36 OP Shade Tree Mechanic
OP Eliza36 Shade Tree Mechanic Joined: Jun 2013 Posts: 33 Northern Ireland	1918 490. I have replaced coil, condenser, points, rotor arm, distributor cap. leads and plugs. Cleaned all fuel lines and carburettor. all 4 compressions are good. BUT I STILL HAVE MISFIRING WHEN WARMED UP. Is there any history of a crack developing in the cylinder head between the inlet and exhaust passages which opens up when warm? Plugs 1 and two are clean, 3 and 4 black!

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Re: misfiring Eliza36 #398644 11/22/17 07:20 PM
Joined: Oct 2009 Posts: 1,294 Hubbard,Ohio chevy1937 ChatMaster - 1,000
chevy1937 ChatMaster - 1,000 Joined: Oct 2009 Posts: 1,294 Hubbard,Ohio	Supper clean plugs could mean water getting in cylinder .

Re: misfiring Eliza36 #398668 11/23/17 02:09 PM
Joined: Jun 2013 Posts: 33 Northern Ireland Eliza36 OP Shade Tree Mechanic
OP Eliza36 Shade Tree Mechanic Joined: Jun 2013 Posts: 33 Northern Ireland	Thanks, possible but no sign of white exhaust smoke or water level going down. Machined surfaces and new gasket 1000 miles ago

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