Hi there, been searching... yes with the button and many different phrases
but I have not found what I am looking for so I will post what I have, what I have done and then my question...
I have a 1997 200SX SE 1.6L with a manual transmission and 190,8XX miles. Air and Heat work. Car is in decent shape for its age.
What I have done...
New spark plugs, gaped at .44, NGK copper.
All plug wires.
What they, the mechanics shop I bought it from, have "done"...
Removed the head due to blown head gasket. They said they had it tested for warpage and cracks and said it was ok to go but had the mating surface milled. Replaced the water pump and starter. They said they put in new champion plugs (this was NOT the case, they were fouled Denso plugs).
The car does not smoke... well not anymore... does not leak coolant and shifts perfectly. Tach does NOT work
Here is the issue. The car gets 28-30mpg in town, this is good, however I am a lead foot from time to time. When I take off from a stop and get aggressive the car pulls fine up to about midpoint up the tach (I am guessing) then plateau's and falls on its face... now if I hold my foot steady it does not improve but if I floor it, it breaks through and pulls very hard the rest of the way up the RPM range. So it's part throttle is great, full throttle is great once past the stumble area but the half throttle is the butt-nut. Any ideas what could be causing this?
Also, I had/have an EGR code... P0400 so I removed the EGR and cleaned it and all the passages connected to it. EGR hold vacuum very very well so I am lost here. However now that I have cleaned it (with carb cleaner) the exhaust smells very sweet but the car pulls slightly better... again, up to the stumble... which reminds me of when my Turbo 280ZX would over-boost... could this be timing related? They did have the head off??? Oh and I had a small amount of oil in my dizzy cap. That is all.... thanks everyone... my name is Mike by the way... oh and nice site