All right I have searched this and had no luck with my problem.So here it is I have a 91 crx with a b18a just rebuilt with 50 over ctr pistons, had the heads combustion chamber welded up into a clover leaf, stock valves, head is also ported,intake is also ported to match the head. New dizzy,I have no codes engine idel is between 2500-3000 I can turn the screw on the throttle body to bring it down to about 1500 takes the gas fine starting off just leting off the clutch motor will try to die unless rpms are up like me pating gas a bit, if I let it die it want crank back up for a bit like its gas flooded the plugs. What could this be Im learning as I go but I have some knowlege. I would really appreciate someone thats mabey had a problem like this or thats very knowlegeable to help me out. I will try to elaborate more if need be sorry such a long post but im aginst the wall with this problem. THANKS Jeremy (sorry my spelling sucks)

 

Wait, WHAT?

How in the hell did you go .050" over? Or did you mean .5mm? Also do you have it tuned it sounds like you didn't. Either way if you are flooding out, from the sounds of it, your port job was done extremely wrong. In other words the walls are much too slick and the fuel is puddling. Also why in the hell would you weld up a Honda head? Is this a full blown race car?

 

sorry,ment .5 its not tuned its running the stock obdo integra ecu,as far as the port work I promise its done to perfection! no the walls are not to slick on the intake side.And the head is welded for a better combustion chamber. this has been done to many honda heads, been doing it since way back. im not a first timer I just dont get on the net much cause im usually in the shop!Trust me when I say ive done many heads and not just honda's.This is a semi street/track car.other than the problem above this car runs great very streetable thanks anyway

 

Well either way plenty of people have built Hondas making nice numbers with out welding the head. Either way have you checked for vacuum leaks? I am sort of lost... If you build Hondas all the time (well hell any motor) why do you need help?

What intake are you using the stock one? If so it could be your FITV. I am not sure how much you need explained... Either way what have you checked?

 

Yea man the head work is just a free mod when you work in a machine shop alot.I do alot of stuff takin from old v8 tricks and new ones I do alot of v8 work.Yea checked vacuum leaks got none.And as far as needing help no one knows everthing !anyone will need help at one time or another. I have never had this prob. on any of the builds I have done.Just curious if anyone else has. I replaced the fitv,iacv, swaped throttle bodies to a stock one,it is a stock intake thats been extrude honed.Im sure I'll figure it out eventually but help and sugestions are appriciated .sorry if I sound arrogant

 

Naw you are good, I am the arrogant one. Well if all is checking out good sounds like you are in desperate need of a tune. The OBD-0 ECUs are not very open to engine modifications. I have built many Hondas and I as well am pretty much strictly SBC. I have welded up Honda heads as well but I have never tried running it on a stock ECU.

Have you changed the injectors? The fuel pump or FPR? Was the head milled? The block? What camshafts are you running? You are not giving a whole lot to go off of.

 

Stock injectors,walbro 255 pump b@m pressure reg set at 47psi. The head was only milled enuff to clear up chamber work aprox. .002. stock cams ,the block was decked .003 just to make a good true surface. custom one off header open exhaust for now. Yea a tune is in order first switching to obd1 with this car.I did a very similer build on my 89 crx with stock teg ecu and have had no problems in the last 5 years and that car is beat on badly many track days under its belt .entertaine this do you think it could be a injector stuck open? I havent swapped them out yet I have a few sets I guess I could try tomarow. I just dont get the idle anything under 1500 bogs out then its flooded

 

Yes, that is more than possible. I would try swapping out injectors. Have you read the plugs at all? Just to be sure it is just one cylinder.

 

.005" is not enough to throw off the timing majorly. I assume you set the timing 2* advanced anyways or what?

 

you ever had this happen or know anyone?(the injector sticking) timing is set at 18deg btdc well the last plug reading I did all plugs were fouled have not checked since new plugs I'll check the new ones tomarow befor injector swap. thanks for the help.I will update tomarow

 

Sounds like you've got a tune problem, once you have it tuned I'm willing to bet it will not bog. If you think it's a single injector, you can try sticking a long screwdriver to each injector and then put your ear to it and make sure you can hear it 'click'. Temporarily you can try pulling a little bit of fuel pressure out of it and see if it cleans up any, that would help tell you if it was a tune problem.

 

yea thats on the list of to do's tomarow so many things I forget about! thanks dood!

 

Another thing... Did you by chance do a DPFI to MPFI swap?

 

You can also get a set of noid lights. That's probably the easiest way to see if you have a wiring problem with the injectors.

 

yea a few years ago when the car was d15 dpfi why you got somthing?

 

Well if it was already running fine after the conversion, then nevermind. The reason being sometimes people forget to swap around the TPS wires. It results in the problem you are experiencing.

 

wouldnt that throw a code? but yea it was fine befor

 

The one time I forgot to when I was in a hurry, it did not throw a code.

 

I know you say you've checked, but to me it sounds like a vacuum issue.

 

Could also be (part of the problem at least) your coolant temperature sender (aka thermal time switch). Also have you pinched off the hose going to your brake booster? That could be bad.