Question about 1989 Pontiac Firebird

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85 firebird 305 motor new plugs,wires,cap,rotor,have spark 5&8cyl. laying down also slight overheating problem.

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Try a lower thermostat.

Posted on Nov 24, 2008

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2 Answers

No spark at plugs


Do you mean you get spark from coil high tension wire to dizzy cap? If so, the only thing left is the cap and rotor and wires and the engine must have a good ground.

Apr 07, 2015 | Hyundai Motor 1993 Excel

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Correct spark plug wiring diagram


Firing order for a 305 is 1-8-4-3-6-5-7-2. The distributor turns counter clockwise and #1 should be the 5 o'clock position looking down at the top of the distributor.

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97 pontiac firebird 5.7L HAS NO spark from optispark but has spark from coil


This engine uses a special flat cap and a standard rotor, right ? The spark comes into the cap and thru the rotor, then to the spark plugs.
Have you replaced the rotor ?
The spark can jump thru the rotor and ground thru the dist. shaft.
Depending on where you are testing for spark, the coil could also be weak and not pushing the spark to the plugs.

Jun 23, 2012 | Cars & Trucks

2 Answers

Change my spark plugs and distrubutor cap and the 85 ranger want start


You may have got the spark plug wires out of sequence.
Reseat the coil wire going to the center of the distributor cap Check the spark plug wires at the distributor against the firing order as follows:
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firewall 3 - 6 2 - 5 1 - 4 front
Best wishes,
TF

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1 Answer

I need a wiring diagram for the ignition control module and distributor on a 2.8 litre v6 motor


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1 Answer

94 royal begis to cut out, chugs at about 55


Replace the spark plugs and wires along with a distributor cap and rotor. Be careful to leave the old wires and plug wires connected to dist.cap, just remove dist. cap from the distributor and lay aside with plug wires on it then install rotor then new cap and proceed to replace each wire for cap and spark plug one at a time so you don't mix up the spark plug wire firing order. Cap laying to the side is used for reference purpose.

Feb 26, 2010 | 1994 Oldsmobile 88

1 Answer

2005 explorer 4.0 eng Service eng. soon light came on took it to autozone. The computer said #5 cylinder missfiring. Put new plugs & wires didn't make a difference. Checked compression this morning...


Changeout the rotor button and cap. the cap has carbon pins under there and wear down from the rotor button. The rotor button sits on the distributor which is easily pulled off. When removing these be sure the plug wires stay in order, Also, use di-electic grease on the plug wires, prevents moisture getting there and run away sparks. CAP/ROTOR button $20 approx.

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