Can't believe I typed the whole damn thing in, put the smiley face in and it blew everthing away.
91 Civic DX Hatchback, 1500, no mods, new head, water pump, timing belt, O2, original Cat. Here's the short version.
Trouble with gas pedal feel when car is running, smooth when car is off. Believe there was a TSB regarding this. Car hesitates from a stop. Maybe someone has access to TSBs?
Failed emissions (Nox) but HC is also high. (Snorkel was off during test.)
HC 0.67 Limit- 0.8 Pass 162 % higher
CO 5.48 Limit 15.0 Pass 3.2 % higher
Nox 2.8 Limit 2.0 Fail 124% higher
Overall 2% Lean
Graph shows sharp spikes which look like they coincide with pedal movement and shifting. 0 to 29 MPH (All emissions spike similarly)
30 to 55 MPH levels are near normal.
Car runs great otherwise, good power, good MPG.
Can't be sure the timing belt install is 100% correct. Can't get the marks to line up without over tensioning the belt. Guessing I'm not doing it right. Maybe someone can help with this. Chilton's says there are different reference points for the cam and crank pulley marks, depending on a 1500 or 1600. Well hopefully someone can help with this. Thank in advance.





Modified by akashelby at 5:23 PM 2/12/2005