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How would I trouble shoot a problem with no spark without throwing parts at an 85 454

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Remove the distributer cap and rotor and check for a broken wire at the pick up coil. Sometime the wire break because of vacuum advance bending wire

Posted on Dec 06, 2014


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I have replaced spark plugs and fuel. why wont my nissan maxima start?

Without testing ,hard to say . does it have spark , fuel pressure , compression ? How much do you know about trouble shooting crank - no start condition . No Start Diagnostic Basics EricTheCarGuy

Feb 02, 2017 | Nissan Maxima Cars & Trucks

1 Answer

2003 buick lesaber new coil pack . still no spark what do I trouble shoot next??????

Did you really replace all 3 coils?
Did you have the check engine light on? You should have the code scanned if it was on to tell you what was at fault.

If you didn't have a check engine light indicate that you had a problem, it seems this problem could have been diagnosed without paying for an unnecessary part by going to a certified shop and having an electronic diagnosis.

Other than a coil pack, the vehicle needs a computer to control the spark. That's what the ignition control module (ICM) is.

You did replace all the wires you disconnected, didn't you?

Feb 12, 2015 | 2003 Buick LeSabre

1 Answer

Why does my engine turn over fine but not start?

I'd start by listening for the fuel pump (assuming it's injected). You should hear the hum when you turn the key to "On" without cranking.

If that sounds good, I'd start checking for spark.

Aug 11, 2014 | 1987 Oldsmobile Cutlass Supreme

1 Answer

1999 ACCORD ecm

trouble shoot it, why did you pick the most expensive part to replace?
in the EFI?
1st step , (really is 2nd after compression) but check for spark. at all 4 to 6 spark plugs.
got spark?
what engine, post engine size. or better the under hood engine type.

Dec 18, 2013 | Honda Cars & Trucks

1 Answer

S class not starting

do tune up replace spark plugs and wires.replace fuel trouble shoot engine not starting check for fuel or spark.if see no spark at spark plugs you could have faulty ignition coil or crankshaft position sensor faulty. could have faulty fuel problem could be faulty fuel pump relay or pump failure code scan vechicle first before buying new parts.if all is good timing chain slipped time or broken.

Aug 11, 2013 | 2000 Mercedes-Benz S-Class

1 Answer

The engine block indicator is on when engine running and only 2 sparks firing. loss of power.

the engine block indicator might be the computer check engine lamp. go to the local parts supply store that offer to plug into the computer to extract engine trouble codes. wright down all trouble codes. the trouble codes is only a guide for further trouble shooting.

May 03, 2011 | 2002 Mitsubishi Lancer

1 Answer

1992 toyota pickup wants to start,but won't unless flamable fluid is sprayed into manifold and will stop when spray is stopped. No voltage was detected at injectors. Can they be jumped to verify that is...

Go to the basic first,for the injector to fire the EFI fuse has to not be opened,injector will have +B on one side and a ground signal from ECM. You dont need to jump it,you need to verify power, then verify signal. check for power first, then check for signal. If there is no power youll trouble shoot from there, then you ll need to check for signal, the signal is generated in the disributor this is called a pick up. First the power the power is from the ignition switch to the igition coil, because you have spark there is no reson to check for power.What gets me is you have spark but no injectors ,your basically need to trouble shoot a open wire condition

Apr 27, 2011 | 1992 Toyota Pickup

1 Answer

2000 honda crv willnot start-no spark

remove the ignition coil pack and have it tested at a local auto parts store. If its still good, try replacing the crank or cam position sensor. If you still get no spark, then you will need to follow up with the tech manuals for thorough trouble shooting instructions.

Apr 21, 2010 | 2000 Honda CR-V

2 Answers

1996 GMC Jimmy Need help trouble shooting. Turns over but won't

Fuel pump or injector assembly. Need to know what the fuel pressure is before throwing a part at it. By what you are saying I'm leaning tword the fuel pump. Make sure the wires at the top of the sending unit are not burn. There is a small 4 wire connector on the inside of the sending unit. If it's burnt you will need to replace both the pump and sending unit.

Oct 11, 2009 | 1996 GMC Jimmy

1 Answer

Anti lock brake light

Scan tool,get code.Could be a Wheel Speed Sensor. You could do that yourself. Just don't guess and throw parts at it.

Sep 29, 2009 | 2002 Ford Explorer

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