Question about Bajaj CT 100 Motorcycles

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How to clean piston head

Engine getting to hot

Posted by Anonymous on

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Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary transport your vehicle to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.How To Clean The Carbon From Top Of Pistons Using Only Household Products
Dissolving carbon buildup from pistons Cleaning piston ring grooves engine...
DOWNLOAD BAJAJ CT 100 SERVICE MANUAL
http://www.marutibajaj.com/pdf/ct100.pdf
Bajaj Auto Ct 100 2015 User Manual

Posted on Nov 28, 2015

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Posted on Jan 02, 2017

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1998 dodge dakota overheated was ran hot lost all power an shutdown


When an engine gets hot, you must shut it off before it gets so hot that it begins to lose power. Sometimes this simply can't be done safely. Once the engine gets so hot that it shuts down, permanent damage may have be done. Bearing can gall, piston rings can break, piston crowns melt, but usually the oil breaks down and the main damage is to bearings and perhaps the crankshaft. Diagnostics would include changing the oil, attaching a good mechanical oil pressure gauge then spin the engine with the spark plugs removed to see how bad the damage is. If oil pressure is adequate, run a compression test. This should give you enough information to decide if the engine can be saved without a major overhaul. Low compression can mean blown head gaskets, warpped heads, broken piston rings, warpped valves, etc.

Jan 01, 2015 | 1998 Dodge Dakota

1 Answer

Car overheated now wont start


If you have had the vehicle hot then I would suspect that you will have a breached head gasket at the very least depending on how hot it was and for how long. You may have damaged other component of the engine as well. Remove the spark plugs and inspect for water on top of the pistons or rotate the engine with the spark plugs removed and watch for water purging from the cylinders. If there is water present then you need to have the head gaskets replaced and the cylinder heads checked by a reputable machine shop for cracks. Other components of the engine should also be checked for damage such as the piston rings.

Jul 10, 2013 | Ford Windstar Cars & Trucks

1 Answer

Jeep 4cyl flathead smoking


White or blue smoke? If white does your hand get damp holding up to the tailpipe when the engine is running? Does the radiator boil over/engine over-heat easily? Flat head engines are notorious for running hot especially if not moving. Flat-heads don't cool well as a general rule and the older radiators are not very efficient heat exchangers. If the smoke is white then the headgasket is blown or the head or block is cracked (the first two are more common). If the smoke is blue then the valve guides and/or the piston rings are worn fairly severely. Ironically the easiest way to damage the piston rings or valve guides in a flat-head is to run it hot.

May 13, 2013 | Cars & Trucks

1 Answer

Engine hot ac turned off on my 2008 gmc sierra. any suggestions


see this causes :
nternal combustion engines run on heat. Chemical energy in the fuel is transformed into thermal energy when the fuel burns, which produces mechanical energy to push the pistons, spin the crankshaft and drive the vehicle down the road.
As efficient as today's engines are, they still waste a LOT of the heat energy they produce. The average gasoline engine is only about 22 to 28% efficient. That means over two-thirds of the heat produced by each gallon of fuel either goes out the tailpipe or is soaked up by the engine itself. Diesels squeeze a little more bang out of each buck's worth of fuel with efficiently ratings of 32 to 38%, but even that leaves a lot of waste heat that must be managed and carried away by the cooling system.
Ironically, the hotter an engine runs the more efficient it becomes. But there's a limit because aluminum pistons and heads can only get so hot before they start to soften and melt. The same goes for cast iron. Engineers have been tinkering with exotic ceramic materials and metallic-ceramic alloys in an attempt to build high temperature, super efficient engines. They've realized some significant gains but ceramics are still too expensive for everyday applications.
HOW HOT IS TOO HOT?
Most engines today are designed to operate within a "normal" temperature range of about 195 to 220 degrees F. A relatively constant operating temperature is absolutely essential for proper emissions control, good fuel economy and performance.
A 50/50 mixture of water and ethylene glycol antifreeze in the cooling system will boil at 225 degrees if the cap is open. But as long as the system is sealed and holds pressure, a radiator cap rated at 15 psi will increase the boiling temperature of a 50/50 coolant blend up to 265 degrees F. If the concentration of antifreeze to water is upped to 70/30 (the maximum recommended), the boiling temperature under 15 psi of pressure goes up to 276 degrees.
So does this mean a cooling system with a maximum concentration of antifreeze in the coolant (70%) can run as hot as 276 without boiling over? Theoretically yes -- but realistically no. The clearances in most of today's engines are much, much closer than those in engines built in the 1970s and early 1980s. Piston-to-cylinder clearances are much tighter to reduce blowby for lower emissions. Valve stem-to-guide clearances also are closer to reduce oil consumption and emissions, too. Plus, many engines today have aluminum heads with overhead cams. Such engines don't handle higher than normal temperatures well, and are very vulnerable to heat damage if the engine gets too hot.
Anytime temperatures climb beyond the normal range, the engine is running in the danger zone.
CONSEQUENCES OF OVERHEATING
If the engine overheats, the first thing that will happen is a gasoline engine will start to detonate. The engine will ping and start to lose power under load as the combination of heat and pressure exceed the octane rating of the fuel. If the detonation problem persists, the hammer-like blows may damage the rings, pistons or rod bearings.
Overheating can also cause preignition. Hot spots develop inside the combustion chamber that become a source of ignition for the fuel. The erratic combustion can cause detonation as well as engine run-on in older vehicles with carburetors. Hot spots can also be very damaging and burn holes right through the top of pistons.
Another consequence of overheating may be a blown head gasket. Heat makes aluminum swell almost three times faster than cast iron. The resulting stress can distort the head and make it swell in areas that are hottest like those between exhaust valves in adjoining cylinders, and areas that have restricted coolant flow like the narrow area that separates the cylinders. The typical aluminum head swells most in the middle, which can crush the head gasket if the head gets hot enough. This will cause a loss of torque in the gasket allowing coolant and combustion leaks to occur when the head cools.
Overheating is also a common cause of OHC cam seizure and breakage.
Wait, there's more. If the coolant gets hot enough to boil, it may cause old hoses or an age-weakened radiator to burst under the increased pressure. Pistons may swell up and scuff or seize in their bores, causing serious engine damage. Exhaust valve stems may stick or scuff in their guides. This, in turn, may cause valves to hang open which can damage pistons, valves and other valvetrain components. And if coolant gets into the crankcase, you can kiss the bearings and bottom end of the engine goodbye.
A HOT warning lamp should never be ignored. Though a few high tech cars like Cadillacs with the Northstar engine can disable cylinders to "air-cool" the engine and keep it running at reduced power in the event of coolant loss, most engines will suffer serious damage if they overheat. So advise your customers to stop driving at the first sign of overheating. Turn the engine off, let it cool down and try to find and fix the cause before risking further travel.

Sep 28, 2012 | 2008 GMC Sierra 1500

1 Answer

How to replace piston rings on honda 6 horse motor


you need to remove the pump then the end cover from the engine remove the cylinder head the unbolt the connecting rod push out the piston hone cylinder and then wash the motor out with soap and water i use tide clothes soap and hot water put it back to gether now why does it smoke check the head gasket the over head engines blow head gaskets and **** oil from the crankcase

Aug 06, 2012 | Honda Garden

1 Answer

Will not turn off


WHEN ENGINE KEEP RUNNING WHEN YOU TURN OFF IGNITION.THIS IS CALLED DIESELING CAUSED BY IDLE SPEED TOO HIGH.TOO MUCH CARBON BUILT UP ON PISTON HEADS AND VALVES HEADS. WHEN YOU TURN OFF ENGINE HOT SPOTS LIKE CARBON BUILT UP ON VALVE HEADS STILL HOT GLOWING.IF YOUR ENGINE HAS LEAKING FUEL INJECTORS THE DRIPPING GAS WILL IGNITE FROM THE GLOWING CARBON ON VALVE HEADS THIS WILL KEEP ENGINE RUNNING.THE ONLY THING YOU CAN DO POUR A FUEL INJECTOR CLEANER AND ENGINE CARBON REMOVER IN GAS TANK.A BOTTLE OF SEAFOAM WILL DO. SECOND OPTION IF ENGINE KEEP DIESELING.YOU PROBABLY HAVE TO REMOVE HEADS BUY A WIRE USE ON A ELECTRIC DRILL AND CLEAN CARBON OFF VALVES HEAD IN THE HEAD. IF YOU HAVE DIESEL ENGINE FUEL SHUT OFF VALVE MALFUNCTION.

Dec 26, 2010 | Mazda Protege Cars & Trucks

1 Answer

81 yamaha xj 650 spark plugs fire when engine isn't running


If you are saying the bike still continues to want to run, (rough running I am sure ), after the key is shut off then the engine is "dieseling". Carbon buildup on the piston / valves/ cylinder head is getting red hot from running. The hot spot(s) serve to ignite the fuel much the same as the spark plugs would. Burn only premium gas, be sure the cylinder is clean and not caked with mud or such, and change to a colder spark plug like NGK BP-8es or BP-9es ( BP-7es is the stock plug ). This may keep the engine cooler and stop the problem. The only other way is to pull the head then de-carbon it and the pistons. While the head is off, re-seat the valves using valve grinding compound. Check out Babbitts for parts. Go to www.babbittsonline.com/parts/viewbybrand/parts.aspx Please rate my answer.

Feb 24, 2010 | 1981 Yamaha XJ 650

3 Answers

I just got a good answer for this question below but i did clean the carbon ring at the top of the cylinder and carbon on the top of one piston...is that bad?? good morning! i have a 01 cherokee with a 4.0...


That carbon build up is bad!Carbon is what a diamond is made from and pieces of it breaking off will decrease the life of your engine.Also the carbon will heat up and cause premature detonation in the combustion chamber.Just wait till he leaves the garage and clean it off before reassembly.
Take care!

Jan 17, 2010 | 2001 Jeep Cherokee

1 Answer

Carb


The mechanic should disconnect the spark plug cable to the spark plug first, Then take off the spark plug to the engine head.Take the bolt off to the engine head.then open the cylinder head place then turn the piston at the top dead center .place a rubber around the piston so that there will be no dirt to fall inside the engine..Use sand paper or any equipment that can be use that will not scratch the top of the piston.do the same with the cylinder head also.Don't forget to clean the spark plug also using sand paper.then clean the piston and the spark plug and the cylinder head using gas so that dirt can't stain in the engine.The exhaust hose and the muffler should also be clean.use long stick of iron or metal to reach the dirt or carbon in the exhaust hose and or the muffler., but first take off or disconnect the exhaust hose and the muffler to the engine.Then clean, and after that return the cylinder head,the spark plug ,the spark plug cable,back to its place .And after cleaning the exhaust and the muffler ,then place it back also to the engine.Before you start doing this make sure that the engine is off.

Aug 11, 2009 | 2003 kawasaki KX 250

1 Answer

Bike bogged down like plug fouled now wont start


Based on the information given, I think you may have a hole in the top of the piston. It sounds like pre-ignition, ( AKA detonation and engine knock ). Pull the cylinder head and check the piston and cylinder head. Sometimes the top outer edge of the piston disintegrates due to the heat. Replace the piston and rings and remove the carbon from the head. Be sure you run 32/1 mix on gas and oil. That's 4oz two stroke oil per gallon of gas. Only use premium gas.

Remove and clean the carb. Be sure the carb mount bolts and carb manifold bolts are tight. An air leak will cause the engine to run hot.

Please rate this solution. Thanks

Apr 06, 2009 | 2003 Honda CR 125 R

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