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I have fire to the spark plug and gas to the engine but will not krank just back fires

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I ASSUME IT IS A FOUR STROKE AND IF SO YOU NEED TO CHECK THE TIMING AND THE VALVE CLEARENCE,IF IT IS A 2 STROKE I WOULD LOOK TOWARDS THE REEDS IN FRONT OF THE CARB,CHECK FOR CRACKS OR GAPS,ALSO MAKE SURE IF YOU CLEAN YOU CARB THAT YOU CAN SEE DAYLIGHT THRU YOUR PILOT JETS.JUST BECAUSE YOU SPRAY SOMETHING IN THERE DOESNT MEAN ITS UNGLOGGED GET PROOF

Posted on Mar 17, 2011

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Posted on Jan 02, 2017

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1 Answer

What is the Wire Order with distributor?


theres no distributor and the firing order for your 3.8 is 1-6-5-4-3-2-the following link shows the coil pack
Buick General Motor 3800 V6 Engine Firing Order DIS IDI ignition timing 3.8 Buick Engine Coil Pack Firing Order Spark Plug Wire Location Which way do the spark plug wires go on & what cylinder is what?
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For the Buick V6 231 3.8 liter turbocharged engine:
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Answers!
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Firing order:
1 - 6 - 5 - 4 - 3 - 2.
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Spark plug wire location on coil pack:
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Closest to the back of the car, left to right: 1 - 5 - 3.
Closest to the front of the car, left to right: 4 - 2 - 6.
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Spark plug wire location on engine:
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drivers side, front to back of car: 1 - 3 - 5.
passenger side, front to back of car: 2 - 4 - 6.
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3 8 Buick Turbo Engine Coil Pack Firing Order Spark Plug Wire Location

Aug 15, 2015 | 1987 Buick Regal

2 Answers

Honda lawn mower wont start


fuel spark air has to get all in the proper time to fire remove plug and squirt a little gas in hole put plug back and try again

Apr 18, 2015 | Honda Garden

2 Answers

THE ENGINE WAS OVERHAUL AFTER THAT IT FAILING TO START JUST CRANKING BUT PROMISING ,THE SPARK IS THERE WHY PUTTING MORE FUEL ON THE PLUGS


Did you check for spark at more than one or two spark plugs? The spark is there, and the spark plugs are wet with gas? Is it flooded? Or is it getting too much gas? For a flooded engine, you know to open the intake valve wide open by holding the gas pedal to the floor, and cranking for up to 15 seconds? This will let a lot of air in and clear out most of the excess gas. Or have you tried this already?
Spark, gas, and compression: that is all that the cylinders need to run. In a well-timed engine, that is. A little gas/air mixture, then compression, then a spark is delivered and it runs. One of those three things is not right or missing for your engine not to start. Or you will have to recheck timing.

Jan 13, 2015 | Cars & Trucks

1 Answer

Spec vin ecu specs


If it turns, then the battery is OK. Either spark plugs are not firing in proper order (wrong firing order), no power to spark plugs, or no fuel because of fuel restrictions (dirty fuel filter). Inspect the air filter to ascertain its not clogged air. If you smell gas, then you saturated the spark plugs, which is why it refuses to run.
Let it sit for half hour to let spark plugs dry. Inspect to ascertain its not dirty spark plugs, which will also prevent engine from running. After ascertaining its proper firing order, spark plugs are clean, and there's power to distributor cap, ascertain there's fuel in fuel lines by squirting half second (short squirt) of starting fluid into air filter. Close the air filter housing to trap flammable starting fluid gas. Turn engine without giving throttle. Let starting fluid be ignited by spark plugs. If it won't start, then spark plugs are not firing to ignite starting fluid gas. If it starts briefly, but won't run when you give throttle, but catches when a 2nd person squirts more starting fluid into air filter just before engine stalls, then its a fuel restriction issue or no fuel in fuel lines.

Nov 29, 2013 | Cars & Trucks

1 Answer

Truck is not firing on 3 cylinders yet it runs.. Runs really rough, back fires, under powered.. Plugs are Wet, Firing order is correct. New Spark plug cables. Don't know that is wrong! Please Help


Check for spark at the plug ( may have coil problem).
If spark is good then do a compression check. Pressure shouldn't be less than 75% of known good cylinders.

Apr 17, 2013 | 1995 Dodge Dakota

1 Answer

Bought unit new last summer. Used it once last summer and once this year. It started fine both times. Today, it will not crank. I have replaced the spark plug, checked the air filter (it is clean), gas...


Unable to crank? Do you mean unable to start?

If you leave gasoline inside tank over long period of time, that will 'gum-up' and ruin carburetor.
To prevent problem, put additive in gasoline or empty gas from tank:: under gas tank should be a hex bolt that holds up gas filter > loosen bolt and drain gas.

Starting the engine:
Take off air filter and spray WD-40 directly into carburetor.
Start engine, engine should fire on the WD-40 accelerant.
If engine fires but does not keep running, try spraying WD-40 into carburetor continuously to see if you can keep engine going.
If engine stops each time after it no longer gets WD-40, then carburetor is bad or gasoline not getting to carburetor or gasoline is bad.
Try fresh gasoline.
Do not turn small engine on side or upside down or oil will get into carburetor.

Check gas supply: Go to gas filter under gas tank. Pull loose rubber hose that connects to carburetor and see if gas comes out rubber hose.
If gas is flowing to carburetor, then carburetor is gummed up.
Small engine repair might suggest 'gum out' or have other suggestions ... but you may need a new carburetor

If engine will not fire on WD-40
If engine will not fire on WD-40 at all, then spark coil may be bad or exhaust port is clogged
Check screen that covers exhaust >> is it covered with carbon and dirt or can air pass through it easily?
Check spark
Remove spark plug
Put spark wire back on spark plug
Hold spark plug by rubber spark cap so hands don't touch metal part of spark plug
Touch spark plug threads against hole where spark plug was removed >>> metal to metal so it conducts electricity
Pull start cord and look for sparking between spark plug threads and metal of engine (don't look at the spark gap ... look where metal meets metal
If you have no spark, the spark coil is bad >> time for estimate from small engine repair shop or get your part number and order replacement

Oct 13, 2010 | Craftsman Garden

1 Answer

Kia ora, i have a makita 2 stroke grass cutter, that just wont start, checked, spark plug, fuel, took it apart and cleaned it..still wont start. Please help, it does not have model number only product...


Engines need 4 things: Spark, compression, fuel, exhaust

1) Does spark plug have spark?
Take out plug, put plug wire back on plug, hold plug threads against metal part of engine, pull cord, do you see spark between plug and engine?

2) While spark plug is out, put finger over hole and pull cord. Do you feel suction that shows compression?

3) What about the exhaust port? Is the screen blocked with carbon deposits and dirt? Soak it in WD-40.

4) Do you have 2-cycle oil in gasoline? Do you have fresh gas? Did you leave gasoline in tank for several months? Is the carburetor clogged with gum?

5) What about the air filter? Does it fire up without air filter? Will it fire if you spray WD-40 into carburetor? Can you keep it going while spraying WD-40 into carburetor?
If it fires with WD-40 but won't keep going on it's own, then the gas is not getting to carburetor or carburetor is clogged with gum.

Oct 08, 2010 | Makita Garden

1 Answer

WONT START AND TRIES TO TURN OVER BUT BACK FIRES


AWESOME a real camaro problem.
backfire.
strong odor of gas because the gas isn't getting burned
caused from backfire. backfiring because the spark isnt sparking when its supposed to.
problems could be bad spark plug wires , bad plugs , bad ignition parts.
your gonna need to check wires for bad spots, check ignition coils and stuff like that. if all that stuff is ok, then your problems have to do with inside the engine. jumped time etc.

Jul 31, 2010 | 1993 Chevrolet Camaro

2 Answers

Motor turns over but will not start, seems to be getting gas, & spark


I don't have enough info to give you a specific answer so I've listed a bunch of possible problem that could cause your engine to roll over but not start.
Check the battery and connections, a weak battery or bad connections can cause a weak spark and stop the engine from firing.
Fuel pump or fuel filter, low gas pressure can cause to lean of a air/fuel mixture for the engine to start.
Bad gas, old gas or water in the gas can stop the engine from firing.
Bad or fouled spark plugs, could be caused by bad gas.
Ignition wiring problems, can cause weak or unreliable spark.
Bad, poorly connected or misconnected spark plug wires. Even 2 wire out of order can stop the engine from firing.
Oily spark plug wires, can cause the spark to fire at the wrong cylinder or misfire.
Worn, damaged or wet ignition components.

Jun 08, 2010 | 1996 Jeep Grand Cherokee

2 Answers

Tractor mower will crank but not start, new gas, plug and battery


check the coil it may have rust on it and the fly wheel

Jun 22, 2009 | Garden

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