4ac problems

[[-not-agn-]]

hey i just brought a ae86 with the 4c it idles fine and every thing but when i go to take off the revs die down and if im sitting there i push the accelarater and nothing but then the revs slowlying pick up and to take off i have to keep the revs about 5-6grand but then it dies again

can any one help me please

[trikzlane]

does it miss at all

[[-not-agn-]]

nah idling is fine and then i put my foot flat to the ploor and then it slowly picks up once its over 3 grand its got normal responce but try to take off no chance!

[khai2298]

hahaha this is similar to my current situation.

[BLIPAE86]

sounds like its flooding does the bitch blow smoke

Or the ignition timing is out

have you cleaned the carbie or intake system

[[-not-agn-]]

I've cleaned it change spark plugs leads fuel filter my vacuum is fine Im getting a new fuel pump and carby but I'm not sure if it will fix it I just need the 4ac to get it reg then my 20v is going in but this problem is setting me back and has me stund

[20v ae71]

skipped a tooth on the timing belt?

[[-not-agn-]]

Haven't checked that I shell

[[-not-agn-]]

Any advice is helpful and apricated

[davidgarratt]

Sounds like ignition timing is out, get a timing light and check its ok

[Mel86]

hey had a similar problem... check the contacts in your dizzy make sure they are opening at the cam lobes point from memory the gap is 0.43mm at 52deg check the manual.. i put new contacts in drove well for a while but then died again so swapped dizzy's from my other 86. drives fine now, dont have to rev to take off anymore :)

hope this helps

[Nicko]

The weakness on most 4K-C / 4A-C motors seems to be the carby

Either get the carby kitted / pull it down & rebuild it, or fuck off that Aisan piece of crap and get a better carby setup on there

Speaking from experience, 4AC Aisan carbs that are ~30 years old now need much carby re-kitting love

[[-not-agn-]]

hey just letting you's know it was my bottom end so new motor it is for me so im just going to put in my 20v and get it engineered :D

[claw]

probably pick up a 4 ac from a wreckers for $`100 bucks, alot cheaper than the $700 just for engineers cert + what they tell you , you have to have