Earlier, I used to do many of the repairs of this car on my own. But now I sit and watch the garage people on the job. This car is 22 years old and with me since 1990 as a personal commute.
The car was not accelerating well since the past few months and was abruptly stopping in the middle of any street.Goosebumps!:Frustrati I decided to rest it for a while and after sometime found that without the air filter fitted the car would run fine with no hiccups – and with a muscle car like engine noise- whrrrrr!
Today I got the carburettor opened in my trusted workshop of Babubhai. The larger butterfly valve in the carburettor was jammed.So all air was being drawn from the carburettor top open and not through the air filter.The jammed valve was soaked in brake oil for half an hour! No effect! A new one was bought and fitted.The carburettor was refitted and the car started. After acceleration, engine oil was drawn into the carburettor by suction! The air filter route remained clogged. The fault was traced to the also jammed reed valve that is fitted on the carburettor-engine head junction.This was also replaced.The inlet of this valve on the carburettor sleeve was full of carbon and again it was found that the new valve was being jammed due to the carbon deposit, that was not allowing the valve to function.And guess what? Petrol from the carburettor flowed into the engine chamber as the air passage was blocked.Oil spillage was liberal and nearly 1.5 litre may have spilled.But the oil dipstick was showing a normal engine oil level:).Thats when the petrol like odour in the spilled engine oil raised suspicion and the mystery of petrol in the engine chamber came true.Now the oil was fully drained, oil filter changed and new oil poured (my brand Castrol GTX).The carbon from the valve passage was cleaned thoroughly.
Another advantage was that the engine inside has been thoroughly cleaned due to the petrol flow within.
I have now got my car back in action and its running fine now. Touchwood!
Attachment 287588
Thats my car
Attachment 287589
The large butterfly valve(jammed) is to the left
Attachment 287590
The 22 year old Mikuni carburettor
Attachment 287591
The engine bay minus the carburettor
Attachment 287592
The valve (vertical in aluminium) just near the carb-engine head
junction.
Attachment 287593
The badly mauled engine bay with the petrol-oil mixture spilled all over!
The car was not accelerating well since the past few months and was abruptly stopping in the middle of any street.Goosebumps!:Frustrati I decided to rest it for a while and after sometime found that without the air filter fitted the car would run fine with no hiccups – and with a muscle car like engine noise- whrrrrr!
Today I got the carburettor opened in my trusted workshop of Babubhai. The larger butterfly valve in the carburettor was jammed.So all air was being drawn from the carburettor top open and not through the air filter.The jammed valve was soaked in brake oil for half an hour! No effect! A new one was bought and fitted.The carburettor was refitted and the car started. After acceleration, engine oil was drawn into the carburettor by suction! The air filter route remained clogged. The fault was traced to the also jammed reed valve that is fitted on the carburettor-engine head junction.This was also replaced.The inlet of this valve on the carburettor sleeve was full of carbon and again it was found that the new valve was being jammed due to the carbon deposit, that was not allowing the valve to function.And guess what? Petrol from the carburettor flowed into the engine chamber as the air passage was blocked.Oil spillage was liberal and nearly 1.5 litre may have spilled.But the oil dipstick was showing a normal engine oil level:).Thats when the petrol like odour in the spilled engine oil raised suspicion and the mystery of petrol in the engine chamber came true.Now the oil was fully drained, oil filter changed and new oil poured (my brand Castrol GTX).The carbon from the valve passage was cleaned thoroughly.
Another advantage was that the engine inside has been thoroughly cleaned due to the petrol flow within.
I have now got my car back in action and its running fine now. Touchwood!
Attachment 287588
Thats my car
Attachment 287589
The large butterfly valve(jammed) is to the left
Attachment 287590
The 22 year old Mikuni carburettor
Attachment 287591
The engine bay minus the carburettor
Attachment 287592
The valve (vertical in aluminium) just near the carb-engine head
junction.
Attachment 287593
The badly mauled engine bay with the petrol-oil mixture spilled all over!