Question about Honda Gxv160 55hp 55 Hp 25mm Dia Lawn Mower Engine

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GXV 160 Honda, spark plug very sooty, when pulling to start it fires back through carb, have reset valve clearances which were near good enough but wondered about timing or poorly seating valves

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You need to do a cylinder leak down test. That will tell you if it is a valve, which one or if it is rings. Try a compression test too. 5 pulls should be 160 to 190 ish. If all that is ok check the carb to see why it is causing a rich running scenario

Posted on Jan 16, 2013

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Posted on Jan 02, 2017

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SOURCE: My Honda GXV 160 is

Before you spend time and money on Buds solution I had exactly the same symptom .If it starts first pull when the engine is warm it is not a fuel or spark problem ,it will be the choke,on mine when the choke lever was full on it did not opperate the choke enough as the cable goes to choke it turns the metal bit clock wise but the metal choke will bend over time and will not be opening the choke just carefully bend the metal bit with some pliers so when the cable is on choke it now actuly opens the choke,it will now start first time when cold ,try this first before you strip apart the carburetor,I liked buds solution may be you might like mine ! www.distinctivehomeimprovements.co.uk

Posted on Jan 22, 2012

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SOURCE: I have a troybilt mower with a honda 160 engine

You may have to replace the carb.But before you do.Check the the fuel line.There is a small screen in the carb,it may be clogged.Inside the tank is a small cylindrical filter,make sure it is good.Break the fuel line at the in line filter,to make sure gas is getting to there,if it is the problem is in the carb.

Posted on May 20, 2011

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SOURCE: I have a Honda engine in my push moser. I can get

Thr air mixture needs to be adjusted. Turn screw in all the way then back off one and a half turns

Posted on May 13, 2012

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2 Answers

What should I check to repair this problem? Vehicle has spark and gass flow, but will not fire.


that leaves compression

or coil....can be ok when cold fails when hot

rings worn or valve clearance to check

Oct 12, 2016 | ATVs

1 Answer

Cr 250 r honda dirt bike wont start


What did the spark plug look like when you first took it out? Was it black/wet/sooty or was it a light tan/gray color. If it was black/sooty, then I would guess you need a coil. I know you said it had a good blue spark when you checked it, but if you poured a little bit of gas in the cylinder and it still wouldn't fire that would be my first place to check. If it ran briefly after you poured a bit of gas in the cylinder and then died, then it's a fuel supply issue. Remove the line that goes from the gas tank to the carb and make sure you have gas at the carb. If you have gas, then I would remove the carburator and take it apart making sure all the jets and passageways are clear. Use carb cleaner and an air attachment and if you still can't get it out, use a small wire to clear things up.

Reassemble and it should run, otherwise report back and we can go to the next step.

Jul 11, 2013 | Honda Motorcycles

1 Answer

17.5 hp briggs and stratton mower - mowing fine - stopped to gas up - will not start back up - back fires a few times while turning motor over


sounds like you may have a broken valve spring. Do a compression test as you crank it. If the valve spring is broken, you will get nearly zero compression, it will turn over very easily and this would explain a couple of backfires.

Sep 04, 2012 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

This is a 1984 1200 that will not start and back fires thru the exhaust and carbs


hello
Back fire is an indication that the bike is firing incorrectly.
Your timing chain is probably stretched, due to the year.
inproper valve timing due to stretched timing chain will make the bike backfire.

I have other thoughts like stuck valves or inproper sparkplug wires on wrong plug,
i always start with easier and less expensive method.
1st check your sparkplug wires to make sure they are on the right plug.
2nd pull sparkplugs and do compression and leakdown test.
3rd pull componets to see if valves are opening and closing, (valve clearance check)
4th if valves are good, then timing chain is probably stretched.
5th if timing chain and timing marks are good, and valves are good, then proceed to
testing the signal generator to make sure your getting a signal to the cdi,
6th if you have a signal to cdi, the cdi tells which coil to fire. either # 1&4 or # 2&3.
if signal generator is working, but coils aren't firing right then its the cdi.
obviously your coils work because its firing, just back firing.

Thats all it could be from easiest to hardest.
Good luck and have a great weekend.
Big Al

May 21, 2011 | 1987 Honda GL 1200 Aspencade Gold Wing

1 Answer

I have a pegaso 650 1998 carb model that will not start. Have cleaned out carbs check float levels and check valve clearance an cam timing. Has a good spark and dose not flood. It gives the odd back fire...


Hi, Parts762 and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue, please visit the websites below. Good luck and have a nice day.
DOWNLOAD 1998 Aprilia Pegaso 650

Mar 28, 2011 | 1998 Aprilia Pegaso 650

1 Answer

Bike not starting at all. sometimes it starts after continous kicks but no use .agian the same problem.


I would suggest that you cleanyour carburetors.
To tell if they need cleaned, spray carb clean in the back of the carb and the kick it over, if it starts right up, then you need to clean your carbs., Drain your gas tank and install a new fuel filter, and put new gas in the tank too.

If it doesn't start right up on the carb cleaner, then check to see if you are getting spark.
If you have spark, then test your compression.
Compression should be at least 125-145 psi but not less than 100 psi to run.

If you don't have spark, pull power wire off coil and see if you have power to the coil.
If you do have power then your coil is bad.
if you don't have power, make sure your on/off switch is working. check wires

As long as you have good compression, good fuel and good spark, that motor will start.

Pull out the plugs and see if they are dry, or wet or , black and sooty.
If dry - no fuel
if wet - no fire or misfire
if black and sooty - clean & check gap or replace with new ones.

Nov 30, 2010 | 2006 Hero Honda Passion Plus

2 Answers

Honda CB250 will not start. It will turn over and there is fire on the plugs and when I look at the plugs after trying, they are "wet" with fuel. What am I missing?


Valve clearance or camshaft timing. If you have no clearance on the intake valves at top dead center, then you will have no compression = no start.

Nov 29, 2010 | 1994 Honda CB 250 Nighthawk

2 Answers

Briggs and Stratton 6.5 hp won't start- not sure gas is getting to the spark plug, just overhauled the carb, changed oil and new spark plug


First you could make sure you have spark. Take the plug out and then plug it into the black wire. Set the end of the spark plug near the frame of the lawn mower. Pull the cord one time to see if there is an arc from the plug to the mower. If you have spark, I would put the plug back in. Before putting the plug back in I would spray a little bit of starting fluid. See if it will fire up with the starting fluid in there. If you have a true good spark, it should fire up. This may be enough to get some gas going in there as long as you have the lines hooked up correctly.

Aug 03, 2009 | Craftsman Garden

1 Answer

Missing, back firing just working really bad!


im not certain as i dont have a maintanance manual for that bike, but intake valve clearance should be approx .004 and exhaust valves should be appxox .008 also you may consider taking the coils to a shop and have them tested. coils after warming up will begin to fail once they start to go bad. spark will be great when the bike is cold, but once it warms up, spark begins to fade and hit and miss.. this may be the problem. hope this helps.

May 20, 2009 | 1976 Honda GL 1000 (K1)

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