Ok I have a obd1 b16 in my 88 dx hatch...So I think I have a timing problem but need some advice, car was running fine and all of a sudden, after changing my plugs, which I doubt caused it(used ngk gpower), my car stutters on freeway, feels weak, and misfired at idle and when I launch my car at 6K after releasing clutch it bogs down to 2K when normally it used to just increase(rpm's)...can this be a timing issue?

 

Check your timing? Takes all of 20 seconds, check your cam/crank alignment and ignition timing

 

i checked alreaddy and its good, ok so i noticed its intermittent, meaning it doesnt do it all the time, runs pretty good when its cold, when its warm it definitely runs like crap, it kind of shakes and stutters a bit when im on the free way, now that i remember, when i was assembling the motor, i broke the tip of an injector, can that be it?

 

Could definitely be the injector tip.
Check your plugs again and compare them against the one plug in the cylinder with the broke tip.

 

what am i looking for in the plugs? what will look diff bout between them

 

You get the right plugs??? Don't assume the guys at the parts house know what they are doing or even paid close attention to what they pulled off the shelf.

 

If the one plug looks dramatically different then you know you have a problem in that cylinder. I would assume it would be dirty and fouled assuming the fuel from the broken injector wasn't atomizing properly.

 

Ok can an injector that is running rich cause a misfire? And idk, ill double check plugs, ur right cu I used to work for parts store, any body know part # for ngk plugs for b16? Oh another thing that my car does, not sure if its related or not is that it takes a good minute to start some times, and other times it starts right up.......and do obd0 mpfi injectors work on a b16? I noe eg injectors work...do d16a6 work what bout hf motor injectors?

 

You can't mix high and low impedance injectors. I'm going to guess and say you're using an injector resistor box, and the car is wired OBD-0? I believe HF injectors are 190cc, so stay away from those, but d16a6 injectors should be 240cc, same as b16a.

 

yes im running obd0 injectors with resistor box. so im gonna upload pics of the messed up injector, im just gonna go to parts store to get a new one cuz i went to salvajge yards and no d16a6's or ls's so its gonna run me 50 bucks

 

Ok I know this sounds crazy but usually 9 times out of 10 the problem is with something that you last did. Take the plugs out and check the gaps, check on here and make sure they are correct, I have had 2 experiances where autozone hooked me up with the wrong and in one case they have the wrong part number so they will ALWAYS be wrong DOH! Check the entire system maybe you accidentally messed up a plug wire or something.

 

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Oh... just a pintle cap cracked.
You can actually take those off. They don't do anything other than to protect the pintle (needle).
If you messed with it and bent that pintle then you would most likely be seeing the effects on your spark plugs.

Back to troubleshooting your ignition system.
Possible you have a 'leaking' plug wire shorting and causing your misfire?

 

ok but what about the loss of power? so should i just do like a complete ignition and fuel tune up? car is hesistant when i give it throttle, and like i said runs like crap once warmed up. so i toook my car into a shop and they couldnt narrow my problem down, so they just charged me 110 to remap my s300, diagnosis fee, and cylinder leak down test. not sure what results were on cylinder leak test but i will update you guys. they told me that i need to just start messing around with car a lot more.

 

my car runs shitty once it's warmed up and hesitates and misfire, and throws a o2 sensor code. changed it and still the same. maybe your solution will help me out

 

yea mine throw o2 sensor code and knock sensor code but since i have s300 i can eliminate the 02 sensor and knock sensor and run an open loop, but yea ill let you guys know, can tps have any thing to do with this?

 

That SUCKS they charged you $110 for a diagnosis fee and didn't even diagnose the problem!

 

Yea I know, it sucks, so I'm picking up a set of used d16z6 injectors for $30 dollars so I'm changing those and my wires again...ill see what happens, can it be my tps?

 

alright here is what shop "Hondoctors" told me, they narrowed it down to cylinder 2, and cylinder leak test showed no leaks in cylinders meaning i have good compression in every cylinder. they said it could be the valve clearance maybe too tight or the injector. so can valve clearance cause a misfire? or is he just b-sing me to charge me an extra 40 dollars? i can trouble shoot injector by swapping injectors around. what do you guys suggest?