lack of power - KE70 4K motor

[WA_TRD_83]

hey guys, I changed the condensor thats attached to the distributor - but this arvo I also noticed there is one attached to the coil too that looks very similar.
Does anyone know if this is the same part?

cos the one near the coil looks really old and corroded (possibly original) and maybe should be replaced since I replaced the other one on the dizzy.

[Fantapants]

i had this exact problem a while back. old mate came out, adjusted the timing back and insulated the leeds with a bit of extra rubber where they come near each other.... and she runs perfect again... hth

[WA_TRD_83]

i had this exact problem a while back. old mate came out, adjusted the timing back and insulated the leeds with a bit of extra rubber where they come near each other.... and she runs perfect again... hth

thanks for your comments mate.
I guess really gotta wait for new points to arrive, change those and check/adjust timing before I can eliminate this as the problem

[WA_TRD_83]

ok... who had money on distributor points ?

Looks like Matt-AE86


picked up my new ignition points on Tuesday.
went to fit them in the dizzy last night and just for interest sake, thought I would see what the gap was like on the current points.
turned it to TDC - no gap
backed it off a little to high point in dizzy shaft - hardly any gap ... couldnt even fit a 0.2mm in there
WTF... ?!

So just to confirm this as the problem, I loosen the adjustment screw, which was tight as by the way - and regapped the points to about 0.457mm

replace rotor and dizzy cap, start up 4K motor
REVVVVVV... singing along beautifully Happy Days!

in summary, have no idea how or when the points got so far out of wack, esp with the adjustment screw tight.
and EPIC FACEPALM for me not checking the gap sooner before starting a new thread and causing concern.

I guess thats what you get for a n00b backyard mechanic working on his first car that has ever had dizzy points to be replaced

I will fit the new set of points on the weekend and gap them properly and hopefully that will be the end of my ignition problems for a while *fingers crossed*

Damo

[airfireman1]

Damo if there is no grease on the lobes of the dizzy it will wear the rubbing block down for the points in a quick time and then the points gap goes to zip. They used to give you a tiny sachet of grease with your points in the old days.

[WA_TRD_83]

Damo if there is no grease on the lobes of the dizzy it will wear the rubbing block down for the points in a quick time and then the points gap goes to zip. They used to give you a tiny sachet of grease with your points in the old days.

ahh ok. thanks for the tip Dave.
all I got with my new points is just the points
can I just use any old engine grease? or is it a special "points only" grease or somethin?..

[allencr]

Any grease/oil/chicken fat/lube, more important is that the lobes are smooth & not corroded/rusted as that acts like a file on the rubbing block, with or with out lube.

[litldv8]

dont put too much though - just a small smear off a small flat screwdriver - or it will get on the point contact face
equals less go than before
neil

[WA_TRD_83]

so should I put it on the lobes of the dizzy or on the rubbing block on the points?

[airfireman1]

on the lobes will do it will squeeze under the block ok, I use hi temp wheel bearing grease, just a small amount.

[WA_TRD_83]

ok... so maybe its NOT the points

not a good way to spend your Saturday night / early hours of Sunday morning stuck on the side of the highway

had to leave it overnight on the side of the road and get a tow truck the next day.



didn't matter how much I adjusted the points or rechecked them - the hesitation / lack of power under load is still there.

mind you, once it got home and rolled off the tow truck, I started it up, ran fine, drove it up and down the front yard (not wanting to go further than I could push it) and it seemed to drive fine!

Wondering now if its some crud in the fuel tank / fuel pickup that is getting blocked after a bit of driving and then just causes the carbie to lean out
gives it just enough fuel to run/idle - but as soon as you step on the go pedal it chokes and hesitates
then you leave it for a while, and the crap floats away / unblocks whatever

[vanman]

had a similar issue with a KE70 before, ran fine until you asked it for a bit of fuel-sucking power (hills/highway speed), which starved the carby and caused a stall/hesitation. I noted under the bonnet that the fuel filter would be full at idle, then gradually emptied if I revved it for a while - the carby bowl ran out then the hesitation occurred. I assumed a fuel line blockage so I removed the filter, and blew compressed air into the fuel line from the engine bay back to the tank blowing bubbles for a while - unblocked it enough to run the 4K at full song and the problem didn't come back while I had the car... something else to try I guess

Cheers
Vanman

[CrUZida]

Damo, ignore the fuel tank, start with whats listed above, and work your way to the carby.

[WA_TRD_83]

had a similar issue with a KE70 before, ran fine until you asked it for a bit of fuel-sucking power (hills/highway speed), which starved the carby and caused a stall/hesitation. I noted under the bonnet that the fuel filter would be full at idle, then gradually emptied if I revved it for a while - the carby bowl ran out then the hesitation occurred. I assumed a fuel line blockage so I removed the filter, and blew compressed air into the fuel line from the engine bay back to the tank blowing bubbles for a while - unblocked it enough to run the 4K at full song and the problem didn't come back while I had the car... something else to try I guess

Cheers
Vanman

hey thanks Vanman
you could be onto something there - as I did note the other night when I have this problem the fuel filter seems a bit empty, (approx 1/4 full)
one of my other mates last night suggested the exact same thing as you - blow back into the fuel tank to dislodge whatever is blocking it. might be worth a go

I did a couple of dry runs of my fuel tank to see what the fuel economy was like - bad idea hey - cos it obviously looks like its collected some crud from the bottom of the tank.
Fuel in the filter also looks a bit grotty - not nice and clean as it should be too..

will report on progress as soon as I can get access to an air compressor

[EldarO]

just ring a hooker out of the paper and give her the fuel line to suck/blow when she rocks up.

cheaper than a compressor and infinitely more entertaining.