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Ruptured Fuel pump diaphram?
On a Yamaha 1980 XS400 the valve clearance for the inlet valve should be 0.0003 inches. The valve clearance for the exhaust should be 0.006 inches.
Dodge 'Em happened in 1980.
Dodge 'Em was created in 1980.
Helen Dodge died in 1980.
There is no valve adjustment for that engine. If you have valve clatter you must have worn valve train parts.
where is the pvc valve located on a 1980 olds cutlass 3.8 v-6
Hamtramck, Michigan. It was closed in 1980.
5w30
5 on 4.5
Remove the vacuum hose from the modulator valve. If you see any fluid in the valve or the hose, it is defective.
left valve cover