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d16z6 in a 1990 civic

fully converted to obd1

Car runs alright. pulls decent. But it seems to be spuddering at high rpms. Like if i rev it real high, then shift into 4th and give it gas it will spudder/bog. Almost as if its detonation. But the I double checked cam timing and ignition timing is good. However, in order for the ignition timing for be lined up, the dizzy has to be rotated all the way towards the bumper. I did jump the service connecter when i did ignition timing also. Any help will be greatly appriciated. Thanks.

I have a turbo kit sitting in my room waiting to get put on. I just need to figure this problem out first.


Modified by 1990si at 1:17 PM 1/28/2007

 

Check the timing marks. Is it a tooth off? its not a minime is it?

 

no its a full d16z6. There where two sets of marks on the crank pulley. One set of three and one set of two. i set the timing belt up with the two marks by them self.

 

bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1990si &raquo;</TD></TR><TR><TD CLASS="quote">no its a full d16z6. There where two sets of marks on the crank pulley. One set of three and one set of two. i set the timing belt up with the two marks by them self. </TD></TR></TABLE>

between the set of 2 and set of 3??? that would be way off. did you use a timing gun?

if the cam and ignition timing are on Maybe its the plugs, wires, something else on the ignition side. what are you running for fuel/timing control? stock p28?

 

ok. there are two sets of lines on the crank pulley. one set of lines is a set of 3 lines. that is for ignition timing. the other set consists of two lines. which i believe is for tdc for timing belt timing. I lined it up with the center of those two lines. I am running a p06 non-vtec ecu. I know i wont have vtec cause its a p06, but my p28 is already chipped for aboost with a basemap on it. any ideas?

 

you should be lining it up in the middle of the 3 line spot

 

You stated that you turned your distributor toward the bumper indicating that you are retarding timing which will cause poor performances and sputtering as you mentioned. You've probably adjusted your timing incorrectly. First, warm your engine up to operating temperature (when the cooling fan comes on). Second, make sure you don't have any accessories running (radio, headlights, blower fan, ect..). Third, short/jump your timing connector, also known as the service connector, it should be located under the dash on the passenger's side (usually blue or brown color connector) using a paperclip or metal wire. Fourth, using your timing light to check, make sure you know your factory specs for timing, how many degrees at what RPM based on your engine (engines have different factory timing specs. make sure you find that out). But first before any timing can be set or adjusted, you'll need to make sure your engine is idling at operating temperature factory specs as well. Good luck!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wfocrx &raquo;</TD></TR><TR><TD CLASS="quote">you should be lining it up in the middle of the 3 line spot</TD></TR></TABLE>
i thought for the three lines together were for ignition timing?

 

Bump for help. solve the problem and get 5$ paypal.

 

redo cam timing. set the timing to the tdc marks not the ignition timing marks. the dizzy should be half way between the front & back.

 

bump for info.

 

Bump.

 

sounds like a problem i had with my adjustable fuel pressure regulator being set too high. at high rpm, during shifts or with a stab of the throttle it would hesitated for a second, and go back to normal.
the stock regulator could be getting too much fuel, if you have replaced your fuel pump. if you have replaced your fuel pump you may need an adjustable fuel pressure regulator.
so what aftermarket parts (if any) are on the car?

 

none. im running it without an intake right now. other than that just arp head studs, stage 3 clutch with 8lb fly.

 

Was that a dx you converted?

 

nope, si.

 

bump for help

 

I had a similar problem where it would hesitate after a hard shift -- turned out to be a loose valve cover ground. Also, when I first got my B16 running, it would miss in the high end occasionally and that turned out to be the distributor. It does really sound like you have a timing issue though.

 

Try to find a stock ecu and go from there.

 

incorrect cam timing and wrong ecu are you issues.

The motor is designed for vtec and requires vtec to activate for it to run correctly .. your sputtering on the top end because the ecu has incorrect fuel and timing maps.


to check your cam timing do this.

-remove the distributor cap and the number one spark plug
-use a long screwdriver or somthing that you can put into the number one cylinder.
-turn the crank till number one is top dead center then check the location of the rotor on the distributor.
-if the timing is correct the rotor will be pointing directly at where the number one spark plug wire is on the cap.
-if its not your timming is off and needs to be redone again till its correct.

try thisa and let us know what happens

chris

 

will try it tonight. any other ideas???