CIS adjustment?
01-30-2003, 02:04 AM
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CIS adjustment?
On the CIS system there is a 3mm hex fitting inside a spring loaded post behind the air cleaner. To adjust this do you have to press down on it to engage something or does it just turn where it is?
01-30-2003, 02:56 PM
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You need to slip the allen key in gently , located between fuel dist and air sensor plate housing, at idle and turn in small increments.to adjust co%.usually rich to lean.
Elliot
Elliot
02-02-2003, 01:37 AM
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Thanks for the tips, adjusted it today. I think its close to correct, as a bonus the auxilary air valve seems to have an effect now, the engine idles at 1200 cold then drops to 800 after about 1 minute.
But now I seem to have some missing at 1600-2100 rpm under load and some slight popping on deceleration. Any ideas?
But now I seem to have some missing at 1600-2100 rpm under load and some slight popping on deceleration. Any ideas?
02-02-2003, 11:46 PM
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D,
Someone told me this recently.
If the missing sound is like back firing through the intake manifold. You are running to lean.
On my car this is most probable during the warm up cycle.
Not sure what you mean about deceleration. All 930s burble on de-accel. This is because the CIS keeps sending fuel on throtle lift. An EFI system is usally programed to stop fuel when the throtle is lifted.
Someone told me this recently.
If the missing sound is like back firing through the intake manifold. You are running to lean.
On my car this is most probable during the warm up cycle.
Not sure what you mean about deceleration. All 930s burble on de-accel. This is because the CIS keeps sending fuel on throtle lift. An EFI system is usally programed to stop fuel when the throtle is lifted.
02-03-2003, 02:06 AM
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This is definitely "burbling" when I let of the throttle, if this is normal then great!
I am more concerned about the missing and roughness when trying to accelerate. Once past about 2200rpm everything smooths out.
So the question becomes one of when to shift down... if I find myself behind a slow car when climbing a hill I would think that a 6 cylinder engine should have plenty of power at 2000rpm (25-30 mph in 2nd gear) and be able to accelerate from this point... what I find is that the engine is rough at this rpm in this gear, should I be shifting to 1st at this point? thereby raising the rpm to 3800rpm just to climb a hill? 1st then rapidly winds out and I find myself wanting to shift again only to get in the previous situation a moment later. As a side note my other car is an Acura Legend Coupe which can take the hill in question easily ... at 1900rpm in 2nd gear!
I am more concerned about the missing and roughness when trying to accelerate. Once past about 2200rpm everything smooths out.
So the question becomes one of when to shift down... if I find myself behind a slow car when climbing a hill I would think that a 6 cylinder engine should have plenty of power at 2000rpm (25-30 mph in 2nd gear) and be able to accelerate from this point... what I find is that the engine is rough at this rpm in this gear, should I be shifting to 1st at this point? thereby raising the rpm to 3800rpm just to climb a hill? 1st then rapidly winds out and I find myself wanting to shift again only to get in the previous situation a moment later. As a side note my other car is an Acura Legend Coupe which can take the hill in question easily ... at 1900rpm in 2nd gear!
