alscrx

In the morning my b16 cranks awhile and i have to hold down the clutch for a bit until it actually starts. It cranks, stumbles,but i stay holding down the clutch and it starts. Only hard to start when the motor is cold. Its like 80 degree in NY now and still hard to start in the mornings. Once its started n i stop and go to store it will crank twice and start right up. No problems when its warm.

Any ideas?I have searched hard starts and cold starts but no direct anwers.

Motors runs good, no problems and VTEC hits nicely.
New NGK plugs,New wires.

91SI SOHC BOOST

check your idle air control valve

alscrx

Is that the EACV your talking about behind the intake manifold??
I thought that only delt with bouncing idles??

hondacrx2

Mine does it to. i deff. have to watch this thread for info.

ludesrv

A general tune up, valve adjustement and injector cleaning will really help your situation.

A bummed IACV will cause irratic idle, not hard start up.

Duane_in_Japan

A cold engine needs more fuel, the ECT (TW) sensor has high authority on fuel delivery in open loop operation, they are a wear and tear item, just change it out, its not expensive and yes the other cleaning ideas above are great advice too.

alscrx

Modified by alscrx at 8:08 PM 10/9/2007

alscrx

I had my injectors cleaned before install from kg parts.
I could adjust my valves for fun. Whats the spec on the valves for jdm b16a?

I knew eacv was not my problem.

alscrx

UPDATE-

Ok i switched out my Coolant sensor or TW. I took my old one from the d15b6 engine and swaped it with the b16 one. Both are obd0 so i assumed its fine since they plug and play. I switched them before i started the car to see if i could notice a difference,

NOTHING, Still hard to start!!! And still no CEL. What else could cause a hard start?? Could it be the vac lines?? Anyone with a current pic of there b16 vac line setup. Don't post all those old vac pics that are all over when u search cause i have seen them all. Even the factory b16 manual diagram.

Car still runs good with no problems but that.

alscrx

bump for help,. ANYONE??

Duane_in_Japan

Nice try, try spraying some carb cleaner in while trying to start and see if this helps, maybe low on fuel, dizzy is next.

r1ch1e

cap and rotor or fuel filter. it sounds like if you have to prime it twice and it starts not enough fuel is getting in to start it. just a guess

alscrx

Dizzy is only a year old or so. Looks clean as hell also

alscrx

Car started fine with old motor. Think stock pump is not enough for b16??

Only thing i didn't change was cap and rotor cause nobody has the 90-91 teg cap and rotor in stock. Checked auto zone and pep boys....nothing!!

ludesrv

Vacuum will cause irratic idle, not hard start.

Only thing that start and engine is fuel, air and compression. When your engine is cold, you are missing too much of the three, more then likely fuel. Triple check your fuel sytem.

Take a picture of your engine bay, makes it easier to see the swap/possible issues.

alscrx

Would too much slack in the throttle cable cause any problems???

ludesrv

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alscrx &raquo;</TD></TR><TR><TD CLASS="quote">Would too much slack in the throttle cable cause any problems???</TD></TR></TABLE>

No. That would just make the response of the pedal different.

Did you calibrate your tps? Usually used engine from importers have broken TPS sensors due to there location.

alscrx

TPS perfect after replacement and adjustment. This has to be much simpler cause the car runs and drives great.


Modified by alscrx at 12:29 PM 10/16/2007

ludesrv

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alscrx &raquo;</TD></TR><TR><TD CLASS="quote">TPS perfect after replacement and adjustment. This has to be much simpler cause the car runs and srives great.</TD></TR></TABLE>

What does it idle at when cold? 1500?

alscrx

somewhere up there. Idles nicley and slowly drops back down when warm
NOT the problem

alscrx

UPDATE- Changed my cap and rotor and still hard to start. What else should i check now?

cr-x-91

fuel is ur problem...when its cold the fuel does not attomize as easy as it is when its warm out. could be the fuel filter is not allowing enough fule in....good luck man.

alscrx

So what do i do if its the fuel filter? Its not old at all maybe a few months
Could my fuel filter lines be crossed?? ANYONe with pics of there fuel filteR??

Duane_in_Japan

Then its not the filter, spray some strong carb cleaner into the intake while someone is cranking the motor, I like Gumout.

alscrx

Should i do this when i first start it or when the motor is warmed up and running??
If my plugs were incorrectly gapped could this be my problem?

Also i have an aftermarket gas cap, could that be the problem also? When i remove the cap it does not make the hissing noise that it used to with the factory one. That could be fuel pressure when i first crank it????