SYMPTOMS:
when i am idling (warm or cold) and i stomp on the gas quickly the car hesitates and bogs and almost turns off. if i gently raise rpm to about 2k then i can punch it all i want. everything else about acceleration, power is fine

i recently used techron fuel system cleaner
both my O2 sensors are connected correctly
spark plugs are fine

please help

 

Could be a bunch of things...

No one here can say exactly what to look for since we have no idea what year is your car and how much mileage.

Heistation on a high mileage car is totally different that on a new car...

Also, when was the last tune up?

Also how do you know the sparkies are good?

fs

 

i have a 91 crx with first gen B16. i recently replaced my spark plugs 2 weeks ago and checked them today, and they looked good.

 

wires/cap/rotor condition?

Timing too retarded?

did u dump in the fuel system cleaner and then fill your tank or fill the tank then add it.?

 

i will be replacing the cap and rotor today. if that doesnt work i will try to change wires. thanks
i poured the fuel cleaner and then filled the tank. was that correct?

 

correct gap on the plugs? check them...

 

Listen, hesitation can be caused by a ton of indivudual issues compounding each other. On older cars, it is not usually a part that makfunctions but a series of little things.

Do a tune up, check under the hood for loose connections and cracked vacuum hoses. Clean your injectors, replace air filter, pcv valve, cap, rotor and then if it does it still, then you need to look at certain individual components..

fs

 

Sounds like you have a bad O2 sensor. Did you wire 2 O2 sensors into your B16A when you swapped it???

 

i have this same problem with my dohc zc in my 89 crx i bought the car with the motor and just now its starting to do this.. i just replaced the o2 sensor also

 

I had the same problem, i changed wires plugs (NGK ) cap, rotor and 02s

Problem gone

 

mine was a old dirty fuel filter, changed it, it all went away

 

i bet anything it your o2 sensors if it sounds like a lawnmower then replace tehm or switch around the wires

 

Check O2 wiring and operation, ensure timing is set to stock for now. Your cat could be damaged or clogged. my .02.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silverCRXTC &raquo;</TD></TR><TR><TD CLASS="quote">I had the same problem, i changed wires plugs (NGK ) cap, rotor and 02s

Problem gone</TD></TR></TABLE>

It was probably just your O2's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rice_classic &raquo;</TD></TR><TR><TD CLASS="quote">

It was probably just your O2's</TD></TR></TABLE>

i think it was a combination, the wires and plugs look original from 1990

 

check to see if u r throwing any codes, check ur timing both distributor and cams.

 

switch your o2 wires at the ecu, good chance they are backwards. Ryan

PS, just try it, what do u have to loose.

 

i just changed my o2, sparkplugs, rotor and cap and i still have the same problem, the sparkplug wires seem to be new so i dont worry about those. this is only for like the first 2 min after i start my car..

 

could alway change fuel filter and it doesnt hurt to put a bigger fuel pump on too.
just my 2 cents

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sikcrx80 &raquo;</TD></TR><TR><TD CLASS="quote">could alway change fuel filter and it doesnt hurt to put a bigger fuel pump on too.
just my 2 cents</TD></TR></TABLE>

If your stock pump is working and you don't have any "serious" performance mods then a bigger fuel pump is overkill.

Fuel filters are cheap and easy to replace so give that a shot.

Is this every 2 minutes after you start your car?... is that EVERY start or only "cold" starts.... ?

 

its every cold start, like it happeneds and then maybe after like 1-2 min of driving it goes away

 

i found the problem and it turned out my msd blaster 2 coil went bad. i switched it for my old jdm cap and coil, problem solved.