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1984 fxr front cylinder only fires once and awhile. I have spark! New plugs Good fuel. Will start and run but only if I keep the throttle high.

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  • 19 Answers

Check for vacuum leaks

Posted on Dec 04, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: chrysler 3.3 vin r v6 mini van, starts then dies

Charlie. You have replaced the ECM on your van?.
Kedwin,, Your problem is, the computer on that 3.3 L.
Need to be programed with the VIN nember of your car.
The Antitheft System will disable the injectors due a incorrect VIN, Bucause the body computer is not recieve the correct pasword between 5 seconds after start up.
YOU have 2 options. 1 get a ALOHA Smith. some of they have the computer required to program ECMs.

The other option is: Get a new ECM from the dealer, They will program if ask for that.

NOTE:::::: Other way is . Put the body control module with the computer from the same car.

OK... I hope this work for yours.
If NOT letme know I can look for more information.
Thank you.

Posted on Jul 17, 2008

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SOURCE: Black soot on spark plugs and exhaust pipe.

burning rich. Add SEAFOAM to your tank(at part stores everywhere) to a tank of Premium gas, and add every 3000 miles to fuel. this will help the carbon and running rich problem.

Posted on Aug 29, 2009

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SOURCE: Shakes while idling and sometimes stalls.

check for minor vacuum leak and map sensor,pcv,egr valve

Posted on Oct 13, 2009

  • 4 Answers

SOURCE: rough idle when cold and hot

have you replaced coil pack? Check EGR passage through upper mainfold and make sure clean. also make sure EGR valve not stuck part way open. Also check crank and cam sensors along with MAF.

Posted on Oct 19, 2009

  • 46 Answers

SOURCE: ENGINE WILL TURN OVER BUT WILL NOT START / FUEL

Fuel pump is my diagnosis, or filter. I am a Ford technician.

Posted on Nov 29, 2010

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4 Answers

Why wont start


Ok well there is only two things that make a combustion engine run! If you are getting gas to the fuel rail and it has adequate fuel pressure at the rail then you have a spark problem! Pick up a spark tester( looks like a plug wire in a way but has a light ) Plug it into the first plug on the right side of the motor,(# 1 cylinder) and have a friend turn over the motor. There should be positive spark and the light indicator should light as a constant . If it is intermittent in any way than spark is why u will not start. Then on these years I always start with a new coil or coil packs depending on your type of engine! Hope this helps!! Just my opinion and I could be wrong ! Good luck.

Feb 19, 2015 | 1999 Chevrolet Silverado 1500

1 Answer

1994 CHEVROLET C1500 PICKUP 4.3L V6 vortek cranks no start backfiring thru the Throttle body fuel injection system. The Distributor has a small hairline crack under the reluctor wheel could this be the...


100 psi per cylinder is way too low--should be in the vicinity of 150-165 per cylinder
back firing indicates wrong firing order and as you have replaced the plugs etc check that you have the leads on the correct plugs in the correct order
the timing for the engine should be around the 10 degree btdc and not tdc

Mar 23, 2017 | Cars & Trucks

1 Answer

Ford F-150, 1996, 4.6 L 6 cyl. auto, benn cranking & running fine, all of a sudden after sitin a week, engine spins overs, but no start. When I release the start switch, sounds like it wants to crank....


If you are getting a good stream of fuel then you need to see if there is spark. Simple enough, pull one spark plug wire and insert a screw driver into it, make for sure you are only touching the plastic or rubber handle hold part of the metal on the screw drivers shaft near something metal on the car. If it is producing a white spark you are good. If not then check the alternator, it could have a short.

Then I check the plugs. If they are bad it would make it run rough, but they would have to be really bad to keep it from starting at all.

If you have fuel and fire the only problem left is timing. For this you need a timing light. Find the timing mark on the front of the crankshaft. (lower pulley) then hook up the light and clamp to number one cylinder. If it is in time, has fuel and fire then the only answer left is that you have some major problems with the top end.

Jan 22, 2011 | 1984 Ford F 150

1 Answer

1984 Volvo will not start - I have spark and fuel to the cylinders. It just cranks and cranks and floods the cylinders. I am a bit of a "back yard mechanic" and have tried everything I can think...


you probably have weak spark or it is flooding due to too high fuel pressure. is the timing good the firing order correct has the cam belt timing slipped, missing teeth. is the cold start injector open all the time.

Dec 19, 2010 | 1984 Volvo 240 Series

1 Answer

The car starts 99% of the time but every once in a while it won't restart after it has been driven for a few miles. It cranks over but won't start until it has been sitting awhile.


first you need to check if its fire or fuel the next time it wont start pull the plug wire off and hold it close to metal and have someone crank it if it sparks check to see if you got fuel pressure at fuel rail or throttle body but be careful it could be high pressure if no spark an intermittent problem could be ecm or crank sensor no fuel pressure could be fuel pump in tank

Nov 03, 2010 | 1990 Pontiac Grand Am

1 Answer

My son has a 1984 528E BMW Sedan. He last started it in May, was away until July. In July the car would not start. We have discovered ONLY ONE distributor wire point is sending Spark (Front to Back of...


How did you tell it was only sending spark to # 3 cylinder. Could be bad plug wires or very badly fouled plugs if indeed electrical, or could be an issue with the injectors or fuel system. If not sure. One quick way to test is get an inductive timing light to see if you have a spark pulse on each wire. Please give me more infor and I'll see how to help.

Aug 29, 2010 | 1984 BMW 3 Series

2 Answers

1984 Ford F150 turning over but not getting fire


Good battery, good starter. Leaves spark and fuel.
1. Remove 1 spark plug wire from a plug. Hold near engine block while someone "cranks" the engine.
- Spark (yes/no)
If yes, issue is fuel. If no, remove distributor cap and check for cracks. Also clean inside to remove rust and dirt. Besure that inside of distributor cap is reasonably clean and rust free. After that, reinstall cap.
Try to start engine. IF it is exactly same symptom.....
Check input voltage to coil (high voltage source for distributor). Is 12volts present? If not, troubleshoot wiring between battery source and coil. Be sure to include the fuse for "ignition" in fuse box.
If yes.....Confirm high voltage is present at center (input) wire to distributor (CAUTION:- 30,000 volts could be present... do NOT touch bare wire.) Use insulated plyers or similar to place this center wire near engine block to check for spark. Note that this voltage source is powered on as soon as the ignition key is in the "run" position.

Replace coil if no high voltage is coming out. Replace distributor cap and rotor if high voltage is coming in to it, but not leaving and getting to spark plugs.

-------------
Confirm fuel is getting to intake.
I spray starting fluid into intake while cranking engine. It will "fire" if all else is good.
If it "pops" or fires, then you have a fuel feed problem... between tank and intake manifold, shoot fuel filter, fuel pump and otherwise confirm that gas is moving to intake from gas tank.

Good luck.

Aug 08, 2010 | 1984 Ford F 150

2 Answers

1997 Chevy Silverado 1500 4x4 will not start. Getting spark checked all fuses, changed rotar - spark plug wires,


Have you checked the fuel pressure? Fuel pumps are a common failure item on those trucks. Pick up a cheap fuel pressure gauge and hook it up to the shrader valve on the fuel rail. With the ignition on and you should have 55-65psi. Even if it's a few psi below spec it could stop the engine from firing.Once you determine the fuel pressure isn't adequate make sure you have a good power and ground at the fuel pump. If that checks out, time for a new fuel pump module. I recommend only replacing it with an AC delco unit, I've heard bad stories about aftermarket replacements.
You could also spray some carb cleaner or starting fluid in the throttle body and crank the engine over. If it runs for a few seconds after spraying starting fluid in you know you have a fuel delivery problem.

Mar 14, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

'99 silverado will turn over but won't start. I have a new battery, 6 month old starter, new plugs, new distributor cap and rotary button. I used to be able to turn the ignition on and off real quick and...


I'd start with one of these and move on to the next.

Fuel
Spark.

Is it getting fuel? You should have an "in tank" electric fuel pump. When you turn the key halfway (just before turning the engine/starter over), you should hear the fuel pump prime. Easy way to check is to look in the throttle body while someone turns the key to the "on" position. You should see/smell the fuel. You can also listen to the gas tank while the key gets turned. You should hear the fuel pump run.

To check spark, pull a spark plug out, put it back on the plug wire and rest the electrode end of the plug up against the engine or exhaust manifold and have someone turn the engine over. You should see the spark plug firing. Don't hold the plug or wire while doing this. You'll get zapped if it's working ok.

If these both check out ok, then take a look at your firing order. If it's off by a significant amount, it may not fire. I've seen this happen when a cap/rotor/wires were changed and the wire/rotor was not positioned on the correct cylinder. (Most of the time they will at least fire or backfire, but either not stay running or run REALLY badly if the firing order is off.

Jan 18, 2010 | 1999 Chevrolet Silverado 1500

2 Answers

What coul be keeping my 1986 honda civic from starting? The plugs all spark, the fuel pump gives gas to the carb, Ive changed all plugs cap and rotor and have tried spraying starter fluid directly into...


It cranks really good sputters a little and makes some loud pops but it will not turn over? FYI:Cranking and turning over are the same thing. When was the last time it ran. The gas could be bad. Did you get new plug wires as well. Try testing the distributor, remove a spark plug, plug it back into the wire, and touch the threads to ground and crank the engine. It should spark. Keep your fingers away, that's high voltage. Remove all spark plugs, spray some starting fluid in each cylinder, then crank the engine with the plugs out. This will clean any debris from the cylinders. Engines need backpressure to run properly, a major exhaust leak hence the popping, could cause it to not run. If you can get it started try to keep it going, full throttle, keep in the starting fluid, it could just need to get warm. I used to have one of them and they don't like it when they're cold.

Mar 23, 2009 | 1986 Honda Civic

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