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rotorwrench · 12-09-2014, 10:01 PM

I would not consider loss of compression on all 8 cylinders a common thing. Sticking valves will only cause the cylinders affected to have no compression. Did you put the MMO in the fuel or in the oil? You can use it in either but it would act better as a top end lube if it were in the fuel. This is a normal treatment for sticky valve problems. Your rings may be gummed up or the fuel has gone bad. E10 fuel is causing all sorts of headaches now days. Putting ethanol in the fuel causes all sorts of problems if the vehicle is stored in an area that is susceptible to condensation. If too much H2O gets in the tank, it mixes with the alcohol until it's fully absorbed then it all goes to the bottom of the tank in a sticky mass. Too much of this collects in the tank and it will eventually be drawn into the fuel system. If you still have a fuel pump with a sediment bowl, you may see signs of the crap in there.

You might verify that the distributor rotor bug is still lined up with the #1 tower with # 1 cylinder on TDC of the firing stroke.

12-09-2014, 10:01 PM	#8
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,426	Re: No compression I would not consider loss of compression on all 8 cylinders a common thing. Sticking valves will only cause the cylinders affected to have no compression. Did you put the MMO in the fuel or in the oil? You can use it in either but it would act better as a top end lube if it were in the fuel. This is a normal treatment for sticky valve problems. Your rings may be gummed up or the fuel has gone bad. E10 fuel is causing all sorts of headaches now days. Putting ethanol in the fuel causes all sorts of problems if the vehicle is stored in an area that is susceptible to condensation. If too much H2O gets in the tank, it mixes with the alcohol until it's fully absorbed then it all goes to the bottom of the tank in a sticky mass. Too much of this collects in the tank and it will eventually be drawn into the fuel system. If you still have a fuel pump with a sediment bowl, you may see signs of the crap in there. You might verify that the distributor rotor bug is still lined up with the #1 tower with # 1 cylinder on TDC of the firing stroke.