Question about 1992 Suzuki GSX 750 F (Katana)

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Vehicle starts real hard but when it starts it runs great ( new plugs , cleaned out jets , found 1 bad coil and replaced ,--possible valve issue )

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Could be valve sticking or piston rings are rubbing hard against cylinder. slight possible that the starter is failing.

Posted on Jul 01, 2009

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Posted on Jan 02, 2017

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Why does it start hard runs great when running when sits for an hour or so starts hard again new seals new gas lines gas in line can it be bad reeds ?


Hi, Jeff and the usual suspects are:
1. Spark plugs in bad condition or have an improper gap or are partially fouled.
2. Spark plug cables in bad condition.
3. Battery nearly discharged, should have 12.5 volts.
4. 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.
5. Throttle controls not adjusted correctly.
6. Water or dirt in the fuel system.
7. Water or dirt in the carburetor.*
8. Intake air leak.
9. Fuel tank vent hose and vapor valve plugged, or fuel line closed off, restricting fuel flow.*
10. Enricher valve inoperative.*
11. Engine lubricant to heavy (winter operation).
12. Ignition is not functioning properly (possible sensor failure).
13. Faulty ignition coil.
14. Valves sticking.
* Carbureted models.
Good luck and have a nice day.

Nov 22, 2015 | GAS Motorcycles

1 Answer

Loss of power running real rough


Check the exhaust is not blocked,replace spark plugs,check leads and spark is good,check compression.

Aug 20, 2015 | 2002 Mercury Cougar - Automatic, 2.5L V6 -...

1 Answer

1982 JEEP HESITATES WHILE DRIVING AND DIES


2 things. come to mind.
i check the distributor advance works to spec with my timing light (strobe)
if that is ok, its a carb issue.

carbs fail for many reasons, (mostly gummed up inside)
we clean them. that fixes them. (with a kit)
I only have this for symptoms, and is not good.
MAJOR HESITATION AND STALLING OCCURS
does the engine have full power up any hill wide open throttle
is the Hesitation only a short time then catches up.
The carb (not stated P/N or brand) has jets, the if gummed up
will cause lean running.
so will any power valve jet.
ever tune it up. new spark pats, rotor all the way to spark plugs.
bad spark , loves to fail under load, that is its , magic.
carb>
  1. low float bowl levels.
  2. low fuel pressure causing above,
  3. bad float valve , sticks closed and starts bowl of fuel, causing #1
  4. Gummed up jets.
  5. Gummed up emulsion tubes in carb body.
  6. Choke stuck on, causing flooding,
  7. Choke dead causing hard starts . (stuck open)
  8. power valve clogged.
  9. Highspeed accelerator pump bad, causing only sight hesitation.

my guess? based on 1 word "stall" its #1 to 3 or 6.
black spark plug tips would be #6

or if black sparks, the float valve is stuck open flooding engine and stalling.

we can go for days on carbs. but will not.

Mar 19, 2014 | Jeep Cherokee Cars & Trucks

1 Answer

2000 Buell Blast runs great around town. Freeway speeds runs for 3 to 5 miles then out of nowhere dies. Acts like it's running out of fuel then dies. I have pulled the carb and cleaned the jets. C


If it starts up after sitting for a few minutes, (like 2 or 3) it could have a plugged fuel filter or the gas tank strainer built into the fuel valve could be plugged too. Drain the gastank anyway and change the gas with fresh. can't hurt. If it takes 15-30 minutes or after the bike cools some I would look at an ignition coil. Check to see if it has spark next time it quits.

Jul 05, 2012 | 2000 Buell Blast

1 Answer

17.5hp OHV Briggs & Stratton w/ Nikki Carb sputters & backfires thru carb & muffler


Hi, run a number drill through the main jet. Even though you have carby cleaned it a thin layer of residue will remain on the walls of the jet. The problem you have is a lean misfire. Regards Phil.

Jun 11, 2012 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

99 Grand Prix, 3800 vin K, 283, 000 miles. No MIL, no codes, runs smmoth as silk for about 10 minutes after cold start then dies. Will restart only if hold accelerator to the floor. If it comes off the rev...


How old are the spark plugs and wires. GM vehicles are great runners until something goes wrong with the typical spark or fuel delivery issues. Wires or fouled plugs may not set off the computer, it will just run crappy.

Aug 14, 2011 | 1999 Pontiac Grand Prix

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