Question about Honda VTX 1300 S Motorcycles

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..........my engine oil smell of

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If your bike has a vacuum operated fuel petcock on the tank....ensure that it is set in the ON position and not prime PRI position. Often as these age, the diaphram leaks and raw fuel leaks into the vacuum line, into the engine and then crankcase.
You could test by removing the vacuum hose, switching briefly to prime and see if fuel starts leaking out the open vacuum port on the petcock. There are kits to rebuild the petcock...and definitely change your oil and filter to get the contamination out.

Posted on Apr 11, 2011

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Posted on Jan 02, 2017

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Honda 2004 CBR 125 R with 50,000 km smell of petrol in the oil


Hi, Anonymous you're getting ready to go riding you pull out the dipstick to check your oil level and are greeted with the unmistakable smell of gasoline. What happens next depends on the following:
1. You have experienced this before and do not start the engine but do change your oil and filter leaving it 1 quart low until the engine reaches operating temperature then top off as necessary.
2. The amount of time your bike has been sitting since the last time the engine was running.
3. The amount of gas and contaminants in the tank.
4. The oil pump location, exterior or interior.
5. The condition of your petcock gasket/seal/diaphragm.
If your gas tank was low and you start the engine probably nothing you would notice but if your gas tank was full and you start your engine the oil/gas mixture can blow into your air filter, come streaming out of your crankcase breather hose, and launch your oil tank cap followed by a blast of oil. The mess can be minor or you need to call a Hazmat team for assistance. This will also happen if you overfill your oil tank.
Next is the how and why gas can get into your oil tank/system:
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3. Nonvacuum petcocks that are not turned to the off position will patiently wait until contaminants from the gas tank build up in between the carburetor needle and seat breaking the seal thus inviting gas to enter the combustion chamber eventually finding it's way into the bottom end and the oil tank.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Oil smells like Gas
Fuel smell in oil
Honda CBR125R Owner Manual service
http://www.partsfish.com/page/oem-parts-for-honda
Honda CBR125RW Owner Manual

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1 Answer

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2 Answers

My engine oil smell of petrol what could course this


A common cause is worn piston rings. This can be checked doing a compression test.
Call your Honda shop for what the cylinder compression reading should be for your bike.
Place a compression test gauge in each cylinder spark plug hole one at a time and crank over the engine (if you have a kick starter use it with the key off. If it is electric start only, pull the other spark plug wires when you crank it so the engine does not try to start. Write down the reading from each cylinder. The readings should all be close to the same. If one or two are allot lower than the highest reading, the low reading cylinder(s) probably have worn piston rings. If all readings are much lower than the spec from your Honda shop, it is possible that all cylinders need new piston rings.
.

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1 Answer

I have a gas smell in my oil on my 1995 Mustang GT 5.0. It is milkly


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1 Answer

Mower blowing white then black smoke & running rough


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may have a blown head gasket and air filter may be oil / petrol soaked
restrcting air flow

check oil level is correct ( and does not smell of petrol ) wet sumped and breather is working ( not stuck closed )

check for tight valve clearance

if all these are ok then might suspect worn rings / bore ?


may need further info on engine model - type

let me know and i will try help more if can

cheers

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1 Answer

My engine oil light is on, and my bike wont stop reving


hmmm tricky.... knackered fuel tap sounds favourite, petrol vapour coming back round the system via breather back in to airbox making the revs go up, and probably oil is like water being mixed with petrol that's been leaking through. take of oil filler cap and smell oil, if it stinks of petrol, drain oil, if like water and full of petrol, change fuel tap, oil filter, and refill with new oil. carb float valves should stop petrol seeping through in theory but it'll always get past. just thought, if it is all that then airfilter will be full of petrol vapour as well, get a new one if paper, wash out if foam.

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1 Answer

Petrol in engine oil mazda mx5


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