Generator Engine Overhauling & ATS Dedicated Thread ( Advice , DIY, Repair ,Install)

[OmRON]

@babarhailian
well want to share my thoughts,
I decently discovered that home gas pressure is about 21 millibar correct me if I am wrong. Change in pressure really give trouble to generator.
I am really finding a gauge which can help us measuring right pressure.
Second thing is Ventury design. It really help better starting and on gas consumption.

[usmanbhutta]

AOA Guru g and other experts
today i removed self starter of my 3.5 kv (for servicing) and reasembeld generator again for use with kick starter
but when i started engine ,suddenly engine sound changed and started oil leaking from fan vent in bottom of generater near oil gauge, its throws oil only when engine is started
please tell me what happened and what to doo?
its bht garmi and lots of load shedding too

[faiz.aslam.121]

Did you re-use the Gasket? ^ If there is one..

...

There is a screw on your Gas Kit- Tighten it or loosen it till the generator runs without any problems.

It controls the flow of gas to your generator.

[Bal06]

AOA Guru g and other experts
today i removed self starter of my 3.5 kv (for servicing) and reasembeld generator again for use with kick starter
but when i started engine ,suddenly engine sound changed and started oil leaking from fan vent in bottom of generater near oil gauge, its throws oil only when engine is started
please tell me what happened and what to doo?
its bht garmi and lots of load shedding too

Check the seals, I doubt you're done with them.

[babarhailian]

Did you re-use the Gasket? ^ If there is one..

There is a screw on your Gas Kit- Tighten it or loosen it till the generator runs without any problems.

It controls the flow of gas to your generator.

I have used new Gasket and have already adjusted Gas kit at optimum performance level.

[babarhailian]

AOA Guru g and other experts
today i removed self starter of my 3.5 kv (for servicing) and reasembeld generator again for use with kick starter
but when i started engine ,suddenly engine sound changed and started oil leaking from fan vent in bottom of generater near oil gauge, its throws oil only when engine is started
please tell me what happened and what to doo?
its bht garmi and lots of load shedding too

If you have opened up the crank case; you have probably not sealed it back properly. If not then while removing starter motor, you may have broken the side case of your engine block (on dynamo side the part in which oil gauge and inlet is located; they call it "mobiloil tapa" in mechanic's language) it is very easy to break that thing.

[ilove2race]

A.A
Planing to buy local made 125 Kva Generator with LPG setup any idea per Hr consumption.
Is it gud to go with lpg setup.

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[MoizIrfan]

good to see everyone.
just an update my gen runs fine till half choke setting and i have tied the choke their
Using petrol to start directly from venturi.
I had installed many ATS in my friends home and what I have learned is that the default gaskit spring is useless. a little harder is what required if u want to start on petrol and convert to gas. so far no failed starts Alhamdulillah

Load shedding in my area 6 to 7 hours per day
One gas meter separate allocated for the generator
Avg units consumption 5 to 6 hours load shedding is around 85 units for which bill amount comes rs 350
Avg units consumption 6 to 9 hours load shedding is around 135 units for which bill amount comes rs 1350

[babarhailian]

@babarhailian
well want to share my thoughts,
I decently discovered that home gas pressure is about 21 millibar correct me if I am wrong. Change in pressure really give trouble to generator.
I am really finding a gauge which can help us measuring right pressure.
Second thing is Ventury design. It really help better starting and on gas consumption.

Thanks for your reply OmRON; I have heard agoodfriend saying something like that if you are able to reasonably flame a single burner stove, then your generator should run well on that pressure and I have noted the same thing in my case.

Secondly my generator only needs full choke for starting afterwards it can't handle full choke and starts making "Bhuk Bhuk" sounds after intervals of about 5 seconds; which is a sign of drowning in gas (more gas than it can handle) so I have to come out and push the choke lever back to half choke and then its happy again.

One more thing which bothers me is that a few months back I didn't even need to touch the choke lever and generator used to start and run very well; what could have caused it to need more gas and less air for starting and then run at half choke??

And yes, I have also heard that domestic gas pressure is about 21mb; however in my case minor changes in gas pressure doesn't affect the generator; unless pressure is too low for my kitchen stove to flame properly which is very rare.

[babarhailian]

good to see everyone.
just an update my gen runs fine till half choke setting and i have tied the choke their
Using petrol to start directly from venturi.
I had installed many ATS in my friends home and what I have learned is that the default gaskit spring is useless. a little harder is what required if u want to start on petrol and convert to gas. so far no failed starts Alhamdulillah

Load shedding in my area 6 to 7 hours per day
One gas meter separate allocated for the generator
Avg units consumption 5 to 6 hours load shedding is around 85 units for which bill amount comes rs 350
Avg units consumption 6 to 9 hours load shedding is around 135 units for which bill amount comes rs 1350

I was impressed with your idea of petrol start through venturi when you came up with that idea many pages back; I remember on other member (may be hanimughal) also implemented the same; however at that time my gen used to start on NG at half crank without any choke, so I didn't need to switch to this petrol solenoid and manifold system.

I built my ATS with my own design before viewing this thread, and now I don't even remember my connections and stuff so it needs a lot of courage to modify my ATS to include a petrol solenoid. It would be a great help if you could share some thoughts about why would an engine change it's starting and running behavior regarding amount of choke required.

[MoizIrfan]

I was impressed with your idea of petrol start through venturi when you came up with that idea many pages back; I remember on other member (may be hanimughal) also implemented the same; however at that time my gen used to start on NG at half crank without any choke, so I didn't need to switch to this petrol solenoid and manifold system.

I built my ATS with my own design before viewing this thread, and now I don't even remember my connections and stuff so it needs a lot of courage to modify my ATS to include a petrol solenoid. It would be a great help if you could share some thoughts about why would an engine change it's starting and running behavior regarding amount of choke required.

To my limited knowledge. choke position effects the air fuel ratio so we have to set it in a particular fix position where gen easily runs even on slight low gas pressure & at right mixture. the issue comes in starting cold start specially where rich mixture is required to start the gen so u need to alter the choke position just for starting purpose and pull it back once started.
Moreover gaskit modification requires gas solenoid which reduces gas pressure and low quality solenoids leaks. a good solenoid is rs 4500 minimum.
Thats the reason I made the petrol system. no gas solenoid, no moving chokes, simple ats circuit.
regards
thanks for appreciating my idea. Hani Mughal is also using the same setup in his yamaha

[MoizIrfan]

well i never check but gas bill is in reasonable range ,,,,,,,,i am sure you wont feel any thing heavy on your pocket ,,,,,

Good to see u back m still waiting for the Free Energy System Once u said u were developing if u remember

[babarhailian]

To my limited knowledge. choke position effects the air fuel ratio so we have to set it in a particular fix position where gen easily runs even on slight low gas pressure & at right mixture. the issue comes in starting cold start specially where rich mixture is required to start the gen so u need to alter the choke position just for starting purpose and pull it back once started.
Moreover gaskit modification requires gas solenoid which reduces gas pressure and low quality solenoids leaks. a good solenoid is rs 4500 minimum.
Thats the reason I made the petrol system. no gas solenoid, no moving chokes, simple ats circuit.
regards
thanks for appreciating my idea. Hani Mughal is also using the same setup in his yamaha

Thanks for your reply, Moiz! As I mentioned that I had my own ATS design and it was very simple; just made what I needed; I didn't kept any option for gas solenoid, petrol gas conversion e.t.c.; my NG kit mod was also a little bit different but gave the same result that it allowed a slight amount of gas (flame is about the size of candle flame) to escape all the time.

Given that I have no gas solenoid installed and have continuous gas flow to carburetor, I have a nice deposit of NG all the time in carburetor; then why should it need air to be choked out. One more thing that with the choke fully pulled there are zero failed starts.

[MoizIrfan]

Thanks for your reply, Moiz! As I mentioned that I had my own ATS design and it was very simple; just made what I needed; I didn't kept any option for gas solenoid, petrol gas conversion e.t.c.; my NG kit mod was also a little bit different but gave the same result that it allowed a slight amount of gas (flame is about the size of candle flame) to escape all the time.

Given that I have no gas solenoid installed and have continuous gas flow to carburetor, I have a nice deposit of NG all the time in carburetor; then why should it need air to be choked out. One more thing that with the choke fully pulled there are zero failed starts.

In your case its great, But continuous gas leakage is dangerous unless u have placed your generator in an open space. i find it hard to set my gen on full choke as its load taking capacity decreased due to it. mine in 2.5 kva gen. My bill for gas comes 85 units mostly but with gaskit modification it consumes one unit extra per day as I have tested it.
If u are satisfied its great.

[ilove2race]

Want to buy local/kabli engine made 150 Kva genset with LPG Setup coupled with china copper denmo Want to know set price n per Hr cost with LPG.

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[usmanbhutta]

yar i cant find on off timer circuit in our city...
only turn on kit is available with single veriable...
kya kiya jaay?

[makniazi]

Usmanbhutta buy a time delay the one u r sayinr only on timer and add a variable resistor between pins 2and 7 of 555 timer ic

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[afnan1112]

@moizirfan
what kind of spring i need to replace with ng kit spring?

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[afnan1112]

Want to buy local/kabli engine made 150 Kva genset with LPG Setup coupled with china copper denmo Want to know set price n per Hr cost with LPG.

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http://www.ajss-group.com/a_and_j_refurbished_generators.htm

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[MoizIrfan]

@MoizIrfan
what kind of spring i need to replace with ng kit spring?

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Just a little harder than the original one, such that when u insert in the gaskit it is only slightly compressed. so u have to alter its length.