Self Tunning - Khyber G-10 (Plugs, valve clearance, spark gap etc)

[waqasahmed85]

i have following queries

[waqasahmed85]

Few days back my cars engine caught fire, my bro was lucky enough to notice a sudden rise in temp and smoke coming out at front, he immediately turned off the engine, when he opened the bonut engine was on fire. couple of buckets helped put out the fire.

mechanic said it was due to leakage of petrol from a damaged pipe or some pipe burst. it wasnt electrical shortcircuit since 90 % of the wiring was intact. I personally believe that he left some clamp loose when he serviced my carb. I remember the pipes to be in mint condition with zero cracks.

[waqasahmed85]

should i get the carb reserviced?? and somebody please answer my question about jets in carb

[waqasahmed85]

@fas133
if u are still here bro, couple of years back, u shared a google docs link of khyber service manual, its not working

can u please share a new link

[Xulfiqar]

i have following queries

Those two pipes are a vacuum source for the vacuum solenoids you see, Whoever connected them both together is in need of mental help. The little red thing is actually a filter. It should have 3 ports and one would be blocked. It is used when in the factory A/C cars as it was used to route vacuum to the A/C idle up vacuum pod.

The two green arrows you made.

left side = secondary throttle opener
right side = headlamp idle up vacuum pod

the blue arrows point to vacuum pipes

the secondary throttle directly connects to the carby in the picture
the pipe going to an electric switch and then to the headlamp idle up is just that "the headlamp idle up"

When you switch on the headlamps or the radiator fan kicks on this solenoid energizes and raises idle speed by sucking on that vacuum pod.

[fas133]

@waqasahmed85https://drive.google.com/folderview?id=0B9TYRt5w8bE9OTQ5Mzg0NWItYjdjNy00MGM0LTgwNjEtMTJkNTNlYzk1ZDJi&usp=sharing

[MoizIrfan]

well I was unable to locate the vacuum valve so fixed the leak with depoxy as shown in the above pics.
These pipes were connected with each other which I suppose is wrong .
Found an empty space for vacuum pipe as shown below don't know where to connect it

Also the thing marked in square is missing

I haven't got AC in my khyber.
My primary objective is to Increase rpm when Lights or radiator fan engages. which I have failed.
Suggest me how to connect these vacuum pipes. also any settings for the amount of rpm increase when electrical load comes

[Xulfiqar]

that electric thing is the vacuum solenoid for the idle up when you switch on the headlamps or when the radiator fan runs.

Its a simple solenoid and almost any type will work, If you cannot find a genuine one then get a generic one from a toyota and fit it to the body of the car, one side of the solenoid connects to the vacuum fitting with the missing pipes and the other side connects to the vacuum pod behind the carburettor in the picture which is missing a pipe.

The wiring for it is near the shock tower - trace it out, you will need to cut the connector and extend the wiring if you use a toyota type vacuum solenoid.

The rpm adjustment on headlamps etc is on the little rod that extends to the butterly arm (throttle shaft) - use a screwdriver to adjust it with headlamps on.

[Xulfiqar]

btw get a new vacuum filter fitting. Its also found in mehran. Its red in colour.

[MoizIrfan]

that electric thing is the vacuum solenoid for the idle up when you switch on the headlamps or when the radiator fan runs.

Its a simple solenoid and almost any type will work, If you cannot find a genuine one then get a generic one from a toyota and fit it to the body of the car, one side of the solenoid connects to the vacuum fitting with the missing pipes and the other side connects to the vacuum pod behind the carburettor in the picture which is missing a pipe.

The wiring for it is near the shock tower - trace it out, you will need to cut the connector and extend the wiring if you use a toyota type vacuum solenoid.

The rpm adjustment on headlamps etc is on the little rod that extends to the butterly arm (throttle shaft) - use a screwdriver to adjust it with headlamps on.

Thanks now I understand the connections. Now I the only thing I don't know is the rpm adjustment rod that extends to the butterly arm

[Xulfiqar]

look at where the rod connects to the carburettor, there is a screw there - turning it changes rpm as required. It only changes about 100-150 rpm.

When in original tune the headlamps, rad fan or A/C do not affect the rpm on a khyber. it idles at 950 rpm all the time - just like a subaru E10 engine (I love that engine, its a fully forged suzuki G10)

[MoizIrfan]

Thanks I will look into it

[waqasahmed85]

Those two pipes are a vacuum source for the vacuum solenoids you see, Whoever connected them both together is in need of mental help. The little red thing is actually a filter. It should have 3 ports and one would be blocked. It is used when in the factory A/C cars as it was used to route vacuum to the A/C idle up vacuum pod.

The two green arrows you made.

left side = secondary throttle opener
right side = headlamp idle up vacuum pod

the blue arrows point to vacuum pipes

the secondary throttle directly connects to the carby in the picture
the pipe going to an electric switch and then to the headlamp idle up is just that "the headlamp idle up"

When you switch on the headlamps or the radiator fan kicks on this solenoid energizes and raises idle speed by sucking on that vacuum pod.

Thnx Xulfiqar bhai, i will connect these pipes my self. I also bought the best fuel pipe available in market, the guy said its german pipe used in mercedes (which i think he was exaggerating) but the pipe seems good. cost me 100 Rs/feet.

[waqasahmed85]

@waqasahmed85https://drive.google.com/folderview?id=0B9TYRt5w8bE9OTQ5Mzg0NWItYjdjNy00MGM0LTgwNjEtMTJkNTNlYzk1ZDJi&usp=sharing

bundle of thnx bro

[Xulfiqar]

Thnx Xulfiqar bhai, i will connect these pipes my self. I also bought the best fuel pipe available in market, the guy said its german pipe used in mercedes (which i think he was exaggerating) but the pipe seems good. cost me 100 Rs/feet.

fuel pipe? you need vacuum pipe for this job and mercedes dont use rubber vacuum pipes they use very hard nylon pipes with little rubber pieces on the end.

[waqasahmed85]

fuel pipe? you need vacuum pipe for this job and mercedes dont use rubber vacuum pipes they use very hard nylon pipes with little rubber pieces on the end.

i was referring Fuel pipe for petrol, as my car caught fire few days back, and stock fuel pipes were burned in it.

[waqasahmed85]

just changed the fuel pipes my self, the vacuum solenoid had no electrical connection so have to lacate its wiring first.

Cleaned the carb with carb cleaner, converted fan from direct to auto.

@ xulfiqar

where does the circled pipe connect.

[waqasahmed85]

while checking whether the fan is working on auto or not, i noticed white smoke coming out silencer, it was more than usual i guess.

is it ok or there should be less or no smoke.

[Xulfiqar]

just changed the fuel pipes my self, the vacuum solenoid had no electrical connection so have to lacate its wiring first.

Cleaned the carb with carb cleaner, converted fan from direct to auto.

@ xulfiqar

where does the circled pipe connect.

This connects to a port on the carburettor body - its a very short pipe - about 3 or 4 inches only. The vacuum solenoid wiring is very simple, it has a direct ground but a switched positive, it must be lying close by, usually near the shock tower.

[waqasahmed85]

and wat about that white smoke from silencer ??