[BlueSuzy]

Hey i know its not a zooky but alot people come to here from different origins.

As some may know i own a ke30 with the stocko powerhouse of a 3k motor with the 4spman behind it. Its my DD. So i need it going smooooth. And Suzy is out of order.

Now at half throttle she seems to be running abit rough on the road, as in massive flat spot, bit of smoke (only seen at night in other peoples headlights).

Anything before half throttle is normal, anything after half is secondarys? So its the normal whoa feel the power kick..Well slightly.

Been on a 600km round trip last night..

The flatspot dissappears sometimes if i give a kick flat to the floor and back.

Would it be timing?Points? I dont know much about old school tuning/timing. I have always had efi!

Heres a piccy for a looky

[tanshi]

honestly it sounds like a vacuum advance issue to me.

[BlueSuzy]

Hmm maybe a hose is off.. Will looky..

[TASSIETOYUKI]

Well.. i have the 4k but basically the same. I had no problem until i had the throttle shaft re bushed. After having this work done i now have a huge flat spot when planting the foot. My vacuum advance is ok and no vacuum leaks are evident. It has a slight stutter when free revving but if i am at cruise and plant it. I get the big flat spot. I think it must be internal of the carby, like a check ball out of place or something like that but it has never really worried me that much. When running on gas i have no problems like this??

But to answer your question, I dont know. Post up if you have any luck with rollaclub..... :

[31zook]

Mine did the same thing (zook engine) and it was my choke stuck on.

[steak_knife]

Give it a new set of points & plugs. When you have the dizzy cap off, give the rotor button a bit of a twist. It should turn about 10deg, that`s the mechanical advance, if that dosn`t turn put a 4k electronic dizzy in .
then set your timing & forget about ever setting it again!
The vacc advance diaphragm could have a pin hole in it to.

[TASSIETOYUKI]

Oh yeah. and mine has electronic ignition new bosch motor-sport leads, new cap and rotor and iridium spark plugs. Imho i think it is in the accelerator pump circuit... somewhere

[BlueSuzy]

Yeha i should just get a 5K/7k With the ke70 5sp..

Im liking the electronic dizzy idea, my dad has done this before. I must seek the master..

Got this reply from rolla club

altezzaclub wrote:

Check points gap/dwell and timing, maybe tappets even, then tackle the carb I'd say...

Once you know tuning is OK you can hunt for a problem that sounds like it is leaning out at part throttle. Main jet circuit will be on then, even at low throttle openings, although maybe there is an air leak somewhere that leans it out under high vacuum.. How's the idle? and those rubber vacuum hoses that wander around the place... a split in those might do it.

lovely looking car I might add.. look after that one carefully!

[steak_knife]

7k, that's what i`m thinking for my next spook, love efi !!
5k in a rolla makes em get up & go, it`s worth the effort, even fa a daily!

[Rockhopper]

Look down the carby (engine off) and pump the accelerator. Should see a clear squirt of fuel going into the carby. If it doesn't you have issues with the accelerator pump in the carby.
Also as steknig already mentioned, plugs and points won't hurt it, but wack on a new condenesor while you are at it. Condensors don't shit themselves very often, but for the sake of a few dollars, you'd be better off knowing it is done.
By the way. Love the rolla. Don't see many of them these days.

[steak_knife]

have you fixed this old girl??
Some of the things i`ve done to & in corolla`s.
If i can get a scanner i`ll past a photo of a ke20 5tf off the ground !! with me in it.

[BlueSuzy]

I've been driving her everyday and she seems to have sorted herself. Maybe the long trip high revving was no good for her? only have a 4 sp..