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1985.5 starting problems

I have a 1985.5 944 with 24500 miles. The car is in fantastic condition but has been stored for 10yrs.

Took out of storage and flushed all fluids and replaced all filters including the fuel system. Replaced the plugs, battery, hoses and belts but did not touch the timing belt.

Replaced the fuel with new High Test and attempted to start. I got tach bounce but no attempt at firing. Cranking speed was normal. I put a small amount of fuel in each spark plug hole and car fired and ran until fuel was exhausted ( 2 sec approx).

Checked fuel pump quantity at fuel rail but not pressure...good flow!

Sprayed ether thru air intake and ran for moment.

Replaced the speed sensor and regulator and DME but no effect.

Any ideas!! Seems like a fuel issue to me but have voltage at injectors. Thanks!!
Old 08-28-2019, 02:37 PM
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The injectors may be stuck closed.

Try shocking them with a 9 volt battery and some jumpers. It might bring them back to life. If not, have them rebuilt at witch hunter, etc.
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Old 08-28-2019, 02:46 PM
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If you've got fuel-flow out of end of rail, then test end back up chain. This test of final stage verifies everything upstream: battery, ignition-switch, DME-relay, DME, speed/ref-sensors, fuel-pump wires, fuel-pump, fuel-lines, fuel-filter, fuel-rail, FPR/dampener, injectors-wires, injector-power, injectors all at once!


1. Test end-of-chain to verify everything upstream is OK. Pull rail with injectors attached. Place little cups under each injector. Crank for 10-seconds. How much petrol did you collect? Are all injectors spraying identical amounts? If not, then move upstream one component at a time.

2. Test power to injectors. Disconnect all injector-connectors. Key ON, measure voltage at each terminal of every injector-connector. Should have full battery-voltage on one and zero voltage on other terminal. If you have any voltage on 2nd terminal, you've got wiring-harness issue with short. Power will flow across short instead of going to open injector.

3. Test DME pulses to injectors. Measure for injector-pulses at injector-connectors (oscilloscope best, otherwise 'noid-light will do). https://www.amazon.com/OEMTOOLS-27319-Piece-Noid-Light/dp/B01MZD76PK/

4. Measure fuel-pressure with and without vacuum hose attached. Bad FPR may not provide sufficient pressure even if fuel-pump is OK.


No need to waste time & money swapping out perfectly-working parts with brand-new perfectly-working parts and have nothing change. Measure and test parts to verify they are either good or bad before replacing them.

Last edited by DannoXYZ; 09-03-2019 at 03:07 PM..
Old 08-30-2019, 01:51 PM
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Thanks Much!! This will keep me busy for a while. Will advise!
Old 09-03-2019, 05:14 AM
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If injectors are stuck, sometimes knocking them on the ground firmly (not too hard) will unstick them. Learned this from witchhunter....
good luck
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Old 09-11-2019, 06:24 AM
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