Quote:
|
If you remove the parts you describe and plug the front timing w/ a22mm fitting, it will be fine......for a while. Because the carbon buildup within those intake ports will be sig in time if no air ever pushes through.
|
I'm curious now...I removed my pump on my 380SE years ago. I cut a disc and inserted it into the fitting on the intake, effectively plugging it off, as you describe. What would the effect of the carbon build-up in those ports be on engine performance?
I searched, and found an earlier post in the archives from D H Nugent:
"Not sure about MBenz in particular, but most such air pumps pump air into the exhaust right after the exhaust valve. The theory is that any unburnt hydrocarbons (especially if they were unburnt as a result of too rich a mixture) will burst into flame when exposed to an oxygen source since they are so hot (~1400F).
This is basically a burn-off of exhaust - outside the combustion chamber - so it adds no power when present and takes away none when it isn't operating.
The only downside I can think of is that if your mixture is too rich and the air pump doesn't burn off the unburnt hydrocarbons, they'll end up in your catalytic converter (if you have one/more) and that will shorten the life of the expen$ive cat(s)."
So these 'ports' are actually leading into the exhaust manifold, and the possible effect would be to overload the cat IF the engine was running rich??
I can't see that either, since the pump, according to all the posts I've read, only works for a minute or so during warm-up, so after that, there would be no air being ingested through the ports anyway.
I think the $#@%^& things are an overpriced mechanical nightmare totally useless except for passing visual emissions tests. Glad I don't have testing where I live!
