Question about 1986 Ford Bronco

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Can,t start 2.9 motor, cranks and backfires some times. replaced

Timing chain, has spark at the plugs and fuel at the fuel rail. I reached my limit. Please Help.

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Pull out distributor turn rotor 180 degrees,if that don't work your timing marks are off when chain was installed.

Posted on Feb 07, 2009

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2 Answers

I have a 96 F150 it backfired and went dead now it won't crank please help


What do you mean it won't crank ? Is it a no crank - no start or does the starter spin the engine an it won't start an run ?

Oct 24, 2015 | Cars & Trucks

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Feul problem


Lots of things could cause a no-start, Hendrik. Is your "Check Engine" light on? If so, please have someone get the OBD error codes from the car's computer.

Does it crank but not fire?

If it doesn't crank, check the battery condition, battery connections, ground connections to frame and engine block, starter solenoid, starter motor.

If it cranks, doublecheck your fuel pump installation. Make sure the new fuel pump is properly connected and properly electrically grounded. Look for a fuel pump fuse. Check for proper fuel pressure at the fuel rail, check the fuel flow rate. Check for spark, check or replace spark plugs, distributor cap, rotor, plug wires. Check valve timing, replace timing belt or chain if necessary. Check compression.

Aug 03, 2014 | 2001 Kia Sportage

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Backfire mgb not starting?


Backfire when trying to start a motor is associated with rich running, (too much fuel or unburnt fuel), retarded timing, carbon arcs in the distributor cap, intermittent dirty points, spark plug wires out of order and jumped or skipped timing chains.

Apr 28, 2014 | Cars & Trucks

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Won't start backfiring and i just replaced timing chain


sounds like it's out of time,chain must be on wrong.

Feb 11, 2013 | 1990 Chevrolet Celebrity

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I currently own a 1986 Ford Ranger 2.9 V6, RW Drive. Was driving like a charm!! I was driving it yesterday morning, no problems, I parked it after 10 minutes of driving... Last night I went to start it, it...


The cranking will usually sound different after the timing chain has slipped. Does it spit or backfire when you crank it? I suggest you rule out some easier things before going after the timing chain. If you are getting spark and fuel, then maybe I would take a peek at the timing chain to see if it has skipped on the sprocket.

Please see my tip at http://www.fixya.com/cars/r5821173-doesnt_car_start_gasoline_engines . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Nov 25, 2010 | Ford Ranger Cars & Trucks

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"Cranks, but won't start". Replaced fuel pump, CKP, ICM & nothing


If the engine cranks over normally when you attempt to start you car, but the engine does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION. The engine needs adequate fuel pressure, a properly timed spark and normal compression to start.


1) To find why the engine won't start, remove the air inlet tube from the throttle body, push the throttle open and spray a small amount of aerosol starting fluid into the engine. Crank the engine. If it has spark and compression but NO FUEL, it will start and run a few seconds before dying. If it does NOT start, it probably has NO SPARK.

2)Another method to check for spark is to pull a spark plug wire off of a spark plug (if it has plug wires, coil-on-plug ignitions do not) and place the open end of the plug wire near a metal surface on the engine. Have a helper crank the engine while you watch for a spark. DO NOT hold the wire while doing this as it can shock you. If you see a spark, the problem is not spark, but most likely NO FUEL or NO COMPRESSION. If you do not see a spark, the problem is in the IGNITION CIRCUIT.

3)Proper fuel pressure is critical for fuel injected engines to start and run. You should hear the fuel pump inside the fuel tank buzz for a couple of seconds when the ignition is turned on (no buzz means the pump is not running and the engine is not getting fuel). You can smell the tailpipe for gasoline vapors after cranking the engine. If you smell gas, the problem is likely not fuel but NO SPARK. You can also remove the plastic cap and press the schraeder valve test fitting on the fuel rail to see if there is any fuel pressure to the engine (not a very accurate test because fuel pressure must be at a certain level for the engine to start, for that you need a gauge). Even so, no fuel at the fuel rail would tell you fuel is not getting to the engine..

Aug 27, 2009 | Chevrolet Camaro Cars & Trucks

1 Answer

1999 ford Explorer 4.0 v6 4x4 will cranck but not start has spark


Honestly it's probably just dirty spark plugs. Did you pull any of the spark plugs and inspect the tips for build up? A couple things to remember:

1.) If the timing chain broke, the valves wouldn't be opening so you wouldn't have any air coming out of the exhaust during crank. You said it smells like you're getting fuel, so I'm assuming that means you're smelling the exhaust fumes, right?

2.) The crank sensor tells the ignition system when to send a spark to the plugs. If you're getting good spark, it's unlikely that the crank sensor is faulty.

If it's too soon for spark plugs to need replacing, check your sensors. A faulty oxygen sensor for example could cause your engine to run 'rich', resulting in faster crud build up on spark plug tips.

Feb 12, 2009 | 1999 Ford Explorer

1 Answer

94 jeep cherokee cranks but wont start and over loads on fuel


Reaching your Findings I would go to Checking the The Idea of Timing chain Problem
#1 Top Dead Center on Compression stroke, remove dist cap and see where Rotor is Pointing, it should be pointing at #1 Plug wire if not Timing chain & Gear Replacement time. If all Is Well there PLEASE Confide in Me I would Love to Help Thats My Mission here
Good Night and Take life EASY, Rejakwilson

Jan 13, 2009 | 1994 Jeep Grand Cherokee

2 Answers

Cranks but wont start


Engine Cranks But Will Not Start

For an engine to run, you need three things to happen inside the engine. Compression, fuel and ignition, without any one of these components the engine will not run.
Basic Checks:

A. Test Fuses. Test both under hood power distribution center and the fuse panel under dash. This is done with a test light tool. The test light should illuminate on both sides of the fuse, if not the fuse has failed and needs to be replaced.
B. Testing Fuel Pressure Test for proper fuel pressure with a test gauge on the fuel rail, most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port inject systems are between 40 psi and 55 psi. If no or little fuel pressure is observed and there is 12 volt power present the fuel pump, the fuel pump needs replacing.
C. Checking Timing Belt Test for compression by removing a spark plug and insert a compression gauge. Crank the engine over about 5 seconds the gauge should read between 125 psi and 165 psi, if no compression is observed remove front engine cover to inspect timing belt or chain. Crank engine to observe cam rotation, if the cam does not rotate the timing belt or chain has failed. (note: if the timing belt drives the water pump it is best to replace the water pump at this time)
D. Test for Injector Pulse Remove injector connector to insert injector test light (node) or volt meter. Observe light flash or gauge pulse while cranking. If light/voltmeter doesn't respond, an ignition distributor/crank angle sensor (CKS) or an ignition module is most likely your problem.
E. Test for Ignition Spark Remove spark plug wire, insert an extra spark plug into end of wire, rest spark plug next to a ground source then crank engine. You should observe a blue spark between the spark plug gap and ground source. If no spark is observed, an ignition coil, ignition rotor or spark plug wires might have failed. (always keep hands away from engine when cranking)

Jul 14, 2008 | Hyundai Motor 2002 Sonata

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