exhaust problem? (highlighted in red)

[MWAKU]

anyway started the car today, didn't start. cranked, cranked, and 3rd time jsut keep cranking. 4th time, i kept cranking and it kinda started den didn't. 5th time i kept cranking and engine started up. its probably something with my sprak plug right? because i think my dad cleaned it yesterday, and now it aint startin too good.

also my exhaust is puffing out black smoke when i start. i forgot, is that good or bad. what color smoke is bad? black or white. my car does both.

2also exhaust is spitting alot =\ black dots in the cone shape, come from the exhaust =| (don't think thats too much of a big deal tho)

also i don't know if its my exhaust or my engine, but when around 4,000 rev, (driving around) i can hear this whistling sound (i've got a twinloop)

when i shutdown the car, sometimes, like just then, makes this terrible sound, and shutters and den turns off. =\ and if my A/C isn't on, it wont even shut down, keeps jumping/shuttering till i turn it back -> and it doesnt crank, just engine starts right up. i was waiting for like a min, and it wouldn't turn off, turned it back on, turned A/C and turned it the car off, and it shutters for like 3 secs and turned off.. anyone know why this is happening, it only seems to turn off when my A/C is on..

also another thing i want to address, my exhaust. i got it installed on saturday, and all the problems started on sunday. stock piping is 1.75" yeah? my new exhaust (twinloop) is " piping and 2" axleback. would this affect my car in breathing since it is a carb?? should i reset my ECU?

[imprtd]

The black puff of smoke sounds like fuel, especially after cranking so much trying to start it, white is just cold smoke on start up (normal). Why clean the plugs just change them.

[xtat1k]

so, you cleaned the plugs and didnt change them?
i suggest you go and change them $4 each

[bennjamin]

try starting with your foot to the floor (WOT) and give it a good rev.

[MWAKU]

^ Are you sure?

[bennjamin]

might be flooded inside - just dont constantly try to start it as this will fry your dizzy internals

[aaronng]

I agree with changing the plugs. Cheap anyway.

[aaronng]

Next time it floods, you can pull out the plugs to let the petrol evaporate (don't smoke too!). Won't do favours for your engine but it is better than burning out your starter motor.

[MWAKU]

oh ok thanks thanks. so accelerate and then try and start up??

[aaronng]

oh ok thanks thanks. so accelerate and then try and start up??

Yes, the reason is that it allows more air in so that the fuel can ignite more easily. The accelerator controls the amount of air entering the engine, not the amount of fuel entering.

[MWAKU]

oh i see, thanks. so i'm accelerating simutaneously right? like accelerate, let go, startup, or at the same time.
anyone with info for the last two

[aaronng]

oh i see, thanks. so i'm accelerating simutaneously right? like accelerate, let go, startup, or at the same time.
anyone with info for the last two

Same time. Hold the accelerator down, then start the car. Once the engine starts, gradually release the accelerator. Don't release it in 1 quick go, that will cause the engine to choke and die.

[DC4Integra98]

yep as aaronng said, hold accelerator down and start the car. I'm not sure if this works for automatic transmissions but it worked for my manual.

[MWAKU]

whats the proper "gap" for my sparkplug, eg civic hatchback 92'

[aaronng]

whats the proper "gap" for my sparkplug, eg civic hatchback 92'

What engine do you have?

[MWAKU]

d15b4

[aaronng]

Stock NGK plug part number is BCPR6E-11. So the gap is 1.1mm.

[MWAKU]

Thanks alot aaronng

[MWAKU]

Can anyone help me with the problem i've highlighted in red please???

[aaronng]

Looks like there is a slight gap in the throttle butterfly and your carbie is still dosing in fuel.

[MWAKU]

Um. no idea. what do i need 2 do 2 fix this. should i bring to mechanic? could this be also spark plug related??

[aaronng]

It could also be your spark plug being too hot that it is still hot enough to ignite the air-fuel mixture. What plug part number are you using now?

[MWAKU]

No idea. How 2 check lol? It still the same spark plug since i bought the car

also i've been advised that i might need 2 change my head gasket, how much am i looking at. but mechanic is checking for a few other things before we conclude its the headgasket

[aaronng]

No idea. How 2 check lol? It still the same spark plug since i bought the car

also i've been advised that i might need 2 change my head gasket, how much am i looking at. but mechanic is checking for a few other things before we conclude its the headgasket

Take the plugs out and check.
Also, spend $16 to get 4 of those NGK plugs with the part number I listed. Put them in instead.

[mattchuej8]

White smoke is good, its common.
its cold outside and your car is breathing warm.
liek we do when we exhale on cold days.

The spitting could just be fluid from your exhaust that got in from the moist enviroment getting spat out when u rev it. dirt and stuff. or could be oil (maybe correct me if im wrong)

Black smoke could be bad, could mean your eating oil.
which is a moderately bad problem.

im emphasizing the "coulds" i used bcos im not 100% sure.
but hopefully i helped. :)

[aaronng]

Black smoke is excess fuel. Blue-white smoke is burning oil.

[MWAKU]

so 4 of the NGK plug part number is BCPR6E-11. Where do i get it from? WOuld those just mean i pull my old ones out, and stick it in, or would i have to modify the gap?

I hope by replacing the sparkies car will run fine.

[xtat1k]

goto mekong in canley. they'll have em.

[MWAKU]

top stuff thanks

[trism]

any automotive shop should have them

supercheap

repco

etc etc

if you get that part number, they will be gapped correctly.

[MWAKU]

also another thing i want to address, my exhaust. i got it installed on saturday, and all the problems started on sunday. stock piping is 1.75" yeah? my new exhaust (twinloop) is 2" piping and 2" axleback. would this affect my car in breathing since it is a carb?? should i reset my ECU?

[aaronng]

so 4 of the NGK plug part number is BCPR6E-11. Where do i get it from? WOuld those just mean i pull my old ones out, and stick it in, or would i have to modify the gap?

I hope by replacing the sparkies car will run fine.

You don't have to modify the gap. They come pregapped. But do check using your eyes that all 4 are of the same gap and around 1.1mm.

[MWAKU]

oh ok thanks!!! know anything bout my exhaust query?

[vinnY]

don't think an axel back's going to make a difference when the rest of your b-pipe is smaller thus restricting it

[MWAKU]

smaller? i have stock headings, i removed the 1.75" piping from the cat, replaced with 2", the 1.75" axel back with 2". ?

[vinnY]

so.... you have a 2" catback now?

[MWAKU]

yeah!

[vinnY]

doubt it would make much of a difference if your header collector and cat is still small
if anything it'd make the gasses move slower since the engine isn't really restricted to begin with(i.e. stock)

[MWAKU]

oh so putting on my 2" restricts gas flow? o_O? making my car slower? wouldn't the bigger the better, as in its only 0.25", and if anything, smaller exhaust pipes hinder the performance (thats why race trackers remove the exhaust) ?? so the bigger the piping then stock should be betteR?

[trism]

yes and no
in a turbo car, bigger is better

in an N/A car, especially a low powered one, you cant go too big, or you will lose backpressure.
backpressure basically helps to suck the exhaust gasses out of the cylinder.


another thing with exhaust dimensions, and going too big is that a hotter gas will move quicket than a slower one

for example, if i have a 3" exhaust and a 1" the air will have more room to spread out int eh 3", it will move slower, and cool down quicker. this is bad, as you want the gasses to escape asap

also you asked earlier if you should reset your ecu.

the car is carby, it doesnt have an ecu....

[vinnY]

hard to explain but it seems trism's got the idea

[MWAKU]

hah yea i knew that ..... lol

anyways, so 0.25" more aint going to affect it much hey?