2 replies to this topic

[Fixitman]

Have had this car since summer when it ran great. It is now hard to start but when it does it idles OK. Operating throttle from under hood it will accelerate fine after I carefully move past a point where it wants to die. Since it is a manual shift I can only drive it by getting the RPM up and slipping the clutch, not good! Even then it continues to put out an occasional muffled pop every now & then. What's going on?

[Three Fat Tigers]

Most likely the muffled pop is a back fire through the intake manifold, an strong indication that it's running too lean, which fits with the other symptoms.
→Look for any kind of intake leak, make sure the boot between the air flow sensor and the throttle is in good order, not loose or out of place
→Check the aux air valve hoses, make sure they are not loose, especially at the intake manifold, use plastic tie straps for hose clamps as needed
→At idle, spray some carb cleaner around the intake manifold gasket and injectors, any change in engine speed would indicate a leak
→Check your ignition timing; make sure the timing belt hasn't jumped a tooth.
→Inspect the brake booster hose, sometimes cracks in this hose can hide from sight yet cause such issues.
→If you have the lambda-sond (O2 sensor), make sure you can hear/feel the frequency valve buzzing while starting or running.
→Otherwise you may want to move on to checking the base fuel mixture and the fuel control pressure.

Also you might explore http://www.kjet.org/
they have a number of factory manuals (green books) available that cover your fuel system.

[MrWinkey]

When them old CIS cars worked, they worked well but boy they can be fussy. Especially adjusting CO%