Hi Larry, Good question! It runs on the flow of air on the intake side, while the pressure is from the exhaust side, and enters the intake system when the valves are at overlap. Hence the great loss of power at higher RPM'S when the exhaust is restricted. Yet it runs ok at idle or low speed. But it works, .......stopped exhaust equals, no power and pressure reading at the intake. Try it sometime, put your vacuum gauge in place and plug the tail pipe with a rag or what ever, 2000 RPM'S and ....... pressure Howard
> How can the engine continue to run at all if the pressure in the intake > is greater than atmospheric? > > Larry A. > > > Raceingcajun wrote: > > > The best way to check for a stopped up exhaust/catalytic converter, or > >any other exhaust restriction. Is to put a vacuum gauge on your engine and > >run the RPM'S up to about 2000 RPM'S. If the exhaust has any restriction at > >all, the gauge will go from reading vacuum to reading pressure as the RPM'S > >go up. > > > >Howard > > > > > > > >>I vote plugged up catalytic convertor.Does it overheat too,or get hotter > >>than normal? A plugged cat can sometimes be checked by looking at the > >>exhaust. In a normal engine the exhaust is strong and in "puffs". A > >> > >> > >plugged > > > > > >>convertor, in addition to the above symptoms,can show a smoldering,weak, > >>exhaust without the puffs.Also a lack of power. > >> > >> > >> > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.371 / Virus Database: 267.14.18/230 - Release Date: 1/14/06 > > |
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