Question about Hyundai Motor 1991 Scoupe

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Want to set ignition timing on 1991 hyundai scoupe

Want to know how many degrees to set it before T.D.C

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  • Mike Butler
    Mike Butler May 11, 2010

    What engine do you have in that?

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10 degrees BTDC

Posted on Oct 20, 2009

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1991 hyundai scoupe; engine cranks but does not start, check engine light came on then off about three times before this occurred. Car has fuel, checked injectors, fuel pump, plugs, rotar. think it might...


You stated the 'CHECK ENGINE' light came 'ON'!... what/which DTC'S (Diagnostic Trouble Codes) OBDI were retrieved? In 1991, OBDI (1) was used. You could retrieve codes by either turning the ignition switch on/off two or three time within 3 seconds and the light would flash for each number (this way you could determine which system was affected). The POSSIBLE CAUSES are many:

Crank Position Sensor
Ignition Coils/Wires
Water/contaminated fuel
Electrical (Relay(s), fuse(s), Poor ground connections, failed ECU (Engine Control Unit), etc.

Are you getting a SPARK to the plugs?... if so, check fuel pump pressure
If you're not getting a spark to the plugs or not getting a fuel injector PULSE, then the crank position sensor MIGHT BE the problem.... NOT SURE!

Too many POSSIBLE or PROBABLE causes.

In order for an engine to RUN, it needs these things:

1. Air flow (intake AND exhaust)
2. Fuel (proper fuel to air mixture)
3. Compression (140 to 2?? psi)
4. Proper Timing (not too advanced/retarded)
5. Ignition (sufficient and at the correct/right time)

Now, after listing these 5 things, without CHECKING each one, your guess is a good as mine.

Mar 22, 2011 | Hyundai Motor 1991 Scoupe

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How do i fix a hyundai scoupe starting problem? someimes when i go to start my car i have to turn it over several times before i get anything. and then other times it will start just fine. we replaced the...


If you have a national auto parts chain store near you (autozone, advanced auto parts, pep boys,etc etc) Have them hook up an obd2 tester to your car and see if any codes come up(they do this for free!!!). If nothing then I would check the ignition switch module inside the steering column, it may be energizing the starter motor but not sending a signal to the ecu that the car is trying to be started.

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1 Answer

ECU of my Hyundai Scoupe 1994 2 doors cannot trigger the sequence of the fuel injectors to supply gas or petrol into the combustion chambers but spark is available to the spark plugs! can you help me solve...


The ECU requires timing pulses from the crankshaft and camshaft sensors in order to generate the injector pulses. All other sensors just modify the pulse width of the injectors to adjust for power and economy. If the ignition is entirely controlled from a distributor, the two above sensors would not affect the spark. Hope this helps!

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Can't find where the fuel filter is.


sorry i don't have books that far back but a 1993 scoupe had the filter located next to the windshield wiper motor. held on by a strap and 1 bolt there is a gas line on the top and bottom of the filter,with a banjo fitting on the ends.hopes this helps.let me know.

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1 Answer

Ing timming for a 1969 chev 427 390 hp


It's trial and error. If it's a stock points style ignition start with factory settings. If it's an aftermarket electronic ignition, you'll need to know how much vacuum, mechanical or electronic advance there is. Most street engines work best with around 32 to 36 degrees total advance. So you use a timing light to set basic timing at 10 to 14 degrees BTDC, and find out how much vaccum, mechanical or electronic advance there is by 4500 RPM ( it's usually best to have all the advance in by 3600 RPM for a street or strip car). Then reset idle speed and use a stopwatch to test 0 - 60 MPH times and go with what setting gives you the fastest time without pinging. Maybe even a couple more degrees retarded for street use on pump gas ( you can always bump it up a few degrees at the track or when using octane boosters).

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