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Having problems with an old school 64 chevelle witn 427 engine , engine turning over I have spark , fuel , compression good, but is hard starting, timing ok , I run an extta wire from the coil to the battery positive terminal to eliminate voltage drop! Wheres else could be

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  • Contributor
  • 21 Answers

Honestly Raul0024, why are you dealing withthe old external coil system? Replace your distributor with a perfomrance HEI and eliminate those issues. It sounds like your timing maybe off or needs to be adjusted professionally.

Posted on Dec 02, 2014

  • Raul0024 Dec 02, 2014

    Forgot to comment that points and condenser were eliminated! Converted to electronic ignition! I made run for 2 hrs with no problem, run out gas and died, checked ignition timing 5 times. Is fine i have cylinder number 1 to the top and rotor pointing to cyl 1 on the cap. Replaced module for new one and same thing .

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Not the IAC, or MAF, or 02

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1 Answer

Huskee LT4200. Turns over. Why won't it start?


Any combustion engine needs 3 things to run...Spark, Fuel, and compression. You need to figure out what you are missing. Easiest thing to check is spark. Pull the spark plug and hold the metal base against metal engine casing, and making sure you are holding onto the insulating rubber of the boot, have someone help crank the engine over while you hold the plug there. Look for a good strong blue to white spark at the plug gap. If you have no spark or weak yellow to orange spark you will need to look into the ignition system. New plug is the cheapest and easiest thing to change and test again. If it is still a weak spark then you will need to look to the coil/ ht lead, igniter box, or pick-up. While the plug is out, you can check for compression in the cylinder. If you end up having good spark and good compression then you look to the fuel system. If you can't find a problem with your fuel system, your fuel, spark, and compression also have to happen at the correct time....so you check your timing marks. Simple steps of engine trouble shooting.

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I have a 2001 3.0 ford taurus compression on all cylinders less than 90 psi


The car should start, even with low compression in some cylinders. Since two things are needed for combustion, fuel and spark, you need to figure out which is the problem. Remove a spark plug (or buy a spark tester from harbor freight) and check for spark at the plug. Without a tester, simply attach the plug wire to the plug while removed from the engine and rest the base of the plug on the engine block (grounding it). Have someone turn the engine over with the key and observe if you see a hot spark jumping the gap of the plug.
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Engine cranks no start key on engine off rpm reeds 575


i want to buy comma's so bad.
Engine cranks, but it don't start,
with key on,
engine off rpm reeds 575. (im cluesless here)
reads RPM 575 , not running and how pray tell did you
resolve the 5 at the end? what device showed that?
digital tacho or a scan tool? or dash tach? please tell this.


that is a good input , if true. the tacho on many cars is from
the spark primary signal, and if dead the car will not start.
is this a N.American car/ (unstated?)

the first checks (we go from easy to harder, and more tools)
1:got spark?
2: got fueling if spark is good, the ECU cuts fuel if it even suspects bad spark is true.
never look for bad fueling if the ECU reports bad spark.
that takes a scan tool to see what the ECU thinks, and sees.
got a scan tool they only cost $7, here.

If engine compression is at spec. W.O.T.
and spark is good.
then test fuel works all above is good,(mostly), if test fuel works
and it don't start up and stay running, with a fast right foot.
then the fueling system parts are bad.
this works for carb cars or EFI , this part is no different.
old school to new.

see scotty do it.
http://www.youtube.com/watch?v=064Ilsz8Fzg&NR=1&feature=fvwp

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1 Answer

2003 chevrolet van 1500 wont start


use OBD II scanner. if there is a code in the pcm, it wil point you in the right direction. if not, go back to old school diagnostics. check for spark, check fuel pressure, check compression. if these appear ok, check timing.

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1 Answer

Im looking for a spark plug wirng diagram for a 1966 corette 427


1966 - 1969 with 4 Barrel Carb (L36)
(Low Compression Model)
Max Brake Horsepower - 390 @ 5200 rpm
Max Torque - 470 @ 3600 rpm
Stroke - 3.76
Bore - 4.251
Compression - 10.25
Firing Order - 18436572

1966 with 4 Barrel Carb (L72)
(High Compression Model)
Max Brake Horsepower - 425 @ 5600 rpm
Max Torque - 460 @ 4000 rpm
Stroke - 3.76
Bore - 4.251
Compression - 11.0
Firing Order - 18436572


zjlimited_1418.jpg

283, 327, 396, 409 and 427 CID Engine 1965-1966
Firing Order 1-8-4-3-6-5-7-2


zjlimited_1417.jpg

350 CID Engine 1969-1974 Corvette, 427 CID Engine 1969 Corvette
Firing Order 1-8-4-3-6-5-7-2


Hope this helps (remember to rate this answer)

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Ok again. forget what money i put into it. Right


I dont know if this may help or not but 87-91 jeeps had bulhead and wiring problems at the firewall area,
also had distributor and computer problems. relays were also a problem with tese vehicles. Good luck with your problem

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95 Camaro Z-28 starts hard


Need to verify fuel pressure at the injector rail with the engine cranking and with the key on and engine off. Specification is 55 - 61psi. The pressure should build with one cycle of the key. If the pressure is slow to build up there may be a restriction in the system between the pump and fuel rail .
The system should hold pressure without leaking down. If it leaks down there is a problem. If all is good there Checking for a good blue spark at several plugs to verify the ignition system is working ok. A vacuum leak could also cause a hard start issue.
A bad pick up coil or weak crank sensor can cause hard start issues also.

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