d16allday

I have a d16z6 in a 93 civic hatch running a p28 ecu

Heres my issue

Anywhere below 3000rpms the car breaks up terribly, starting from a light is almost impossible full throttle. I tried doing the ignition timing tonight with a brand new distributor, with the distributor turned all way towards the back of the car, it idles great at 800+ rpms, but mashing the throttle in neutral makes it break up and pop. The car above 3k at WOT is fine and doesn't break up, but it DOES break up in all rpms at half throttle. Input? With the IGN timing all the way back, the 3 marks on the crank ALMOST line up with the timing marks

92lxsleeper

sounds like the TPS is bad. check that first.

do you have a CEL? does your CEL even work?

d16allday

Yea CEL works, throwing P041 for 02 sensor heater circuit, was throwing a code for Vtec Pressure switch also, but that was just wiring issue

builthatch

was the car running fine for a while and this just popped up? is this a freshly installed setup?

92lxsleeper

how do you have that code? thats an OBDII code and your car is obd I if you use the p28 ecu.

d16allday

Yea sorry i'm tired lol, both my other cars are obd2 i added p0 in by accident..... CODE 41 is what i'm throwing

hondanube2010

also its possiblly a broken reluctor wheel (crank or cam sensor) ignition (pip) signal. but it probably wouldnt run if u didnt have a good crank signal

d16allday

The car was ok for a while and one day at a light the car just shut off, turned it back on, hard to start, sounded like timing belt skipped teeth, wouldnt idle, ran terrible etc etc. So I started driving my other car and kept procrastinating on fixing this, buddy broke his car so Im letting him drive this to work, so it has to get fixed. He had the timing belt off last night and said the timing was a bit out, so he retimed it and the car ran fine for like 15 minutes, once it warmed up it started running terrible. We put a new distributor on because that was a previous issue and now were trying to time it, but the marks will not line up no matter how far back you turn the distributor.

builthatch

dude i would double check the static timing, the relationship between the camshaft and the crank.

cam sprocket up mark at 12 o'clock, lower belt cover pointer lined up with the lone mark on the crank pulley that is apart from the 3 together

d16allday

Buddy is saying everything lined up with the timing belt.

Solster

sounds like the TBelt is stretched and or he's off a tooth still. never seen a honda motor that far out of time with out that being an issues.

remember to turn the engine 720 Deg. after seting the tension and make sure the timing marks on the cam and crank are still in sync.
fully rotating the engine will pull ALL the slack out of the TBelt.

also did you remember to short out the diag connector when setting timeing???

also dose this engine have a adj. cam gear???
had one at work we diag'ed as a skiped tooth turned out all 6 bolts holing the cam gear where lose and it was jumping the timing around.

d16allday

Yeah they said they turned the motor and everything was still lining up. Yes we jumped the connector when setting the timing, its the same one you jump to read trouble codes, yes? Engine does not have an adj cam gear, stocky ocky.

builthatch

x2

Solster

ok well the only thing i can think of then is Poor fulling injector stuck open or not opening all the way.

the D16Z6 motor only has the sensors in the dissy for controling spark. Nothing on the Crank.

and you replaced that so.

um MAYBE you have a craked Dissy cap that will make the car run All over the place also check plug GAP


***DING***

Just remembered ALL cars I have seen that run like that. all have E3 spark plugs There crap and i have seen More ppl spend $$$$.$$ putting in new sensors and other parts over a Set of E3 plugs.if it has them thorw them away. and get any thing ealse hell the old plugs from a lawn mower are better then E3

Link to the E3 Deamon plugs for referance.
http://www.e3sparkplugs.com/

Former User

X3

DCRB

motor running on all four cylinders? good compression? my old motor ran like what you describe, it had almost no compression in one cylinder... i could pull off the plug wire on that cylinder and not notice a difference in idling

Solster

Is it just me or does it seem that ppl forget thay ever posted a question?

d16allday

Didn't forget i took everything into consideration

builthatch

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