sr hard to start when cold

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rvas13
Posts: 16
Joined: Sun Dec 13, 2009 3:54 pm
Car: 91 "sil40"

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i recently just installed BC 264/264 cams and i go to start the car and it takes a while to start. after giving it gas it starts.when the car is warm it starts up fine. people have said it could be CTS...

BUT i pulled my plugs and i keep fouling cylinder 3 spark plug.what would cause this? weak or lack of spark(bad coil pack?) im running BKR6's right now on 10 lbs.under boost the car runs fine but crusing speeds thers hesitation and back fireing.


rvas13
Posts: 16
Joined: Sun Dec 13, 2009 3:54 pm
Car: 91 "sil40"

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also forgot to mention ive got 255 walbro and 555cc injectors.

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the converted
Posts: 2767
Joined: Wed Feb 21, 2007 7:14 am
Car: '99 BMW M3 6.0
'88 Toyota Celica All-Trac (somewhere in Cali)
'20 Toyota Tacoma
Location: Boston

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Probably tuning. What are you running for management?

rvas13
Posts: 16
Joined: Sun Dec 13, 2009 3:54 pm
Car: 91 "sil40"

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the person b4 me had it tuned by JGY on the #63 blacktop ecu with a daughterboard

takae86trueno
Posts: 20
Joined: Mon Mar 01, 2010 8:42 pm
Car: 89 240sx coupe redtop sr20det

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did you check your cool temp sensor that has to do with the car starting at a cold start!!

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rc1honda
Posts: 585
Joined: Mon Aug 11, 2008 4:25 am
Car: 1992 240 sx
2007 BMW 335xi
2008 Honda CBR1000RR
Location: Chicago burbs

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I really don't think it has much to do with tuning. I know the BC cams are tricky and have to be degreed. The intake and exhaust timing are probably way off and causing a rich state. Get some cam gears or learn how to dgree them yourself.

BC should of sent you a little card with the cams. It has the degree specs on them. BC cams are not like HKS and GReddy easy cams, most if not all have to be degreed to run properly.

This is what you ned to do to your cams.http://www.carcraft.com/howto/....html

rvas13
Posts: 16
Joined: Sun Dec 13, 2009 3:54 pm
Car: 91 "sil40"

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takae86trueno wrote:did you check your cool temp sensor that has to do with the car starting at a cold start!!
i changed that out today. it helped a little but i still have cyl 3 plug fouled so tomorrow ill swap them out and ill be able to give a better statement tomorrow

rvas13
Posts: 16
Joined: Sun Dec 13, 2009 3:54 pm
Car: 91 "sil40"

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silly over looked mistake. i pulled my fuel rail this morning and cylinder 3(the one i kept fouling plugs and was hella rich) injector was leaking. after i get out of class today im going to replace the o-rings. when i replaced them b4 i dont remember lubeing them b4 i put them in so they probably tore. after i replace that ill get back to everyone

rvas13
Posts: 16
Joined: Sun Dec 13, 2009 3:54 pm
Car: 91 "sil40"

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problem solved. small o ring on injector was shot.replaced and started up effortless

i hate how the smallest thing messes up everything

thanks to everyone for the patients and input


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