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Old 02-05-2012, 12:10 PM
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New distributor, now no fuel to injectors

Hey guys...I put a new dist w built in coil on my 87 Chevy it had exturnal coil.now I'm geting spark to plugs but I've lost fuel in my injectors now what?? Thanks

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Old 02-05-2012, 12:57 PM
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You didn't say what kind of car/truck you have. Some need to have oil pressure to turn on a relay that turns on the fuel pump. In swapping the distributor you might not have got the oil pump drive shaft lined up with the distributor gear correctly, and not turning the oil pump.
Just a thought.
ssmonty
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Old 02-05-2012, 01:02 PM
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It's an 87 Chevy p/u I'll go see if I have oil Pres
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Old 02-05-2012, 01:21 PM
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Did you put a regular HEI in it?
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Old 02-05-2012, 01:22 PM
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K so I'm an idiot can't check Pres w out Runnin but how can I tell if I dnt have that right
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Old 02-05-2012, 01:25 PM
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I dnt knw what an hei is sorry
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Old 02-05-2012, 01:38 PM
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Old 02-05-2012, 01:44 PM
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Yes that's what I put in.I had stock dist w external coil but smoked 2 coils went to this dist now have spark but no fuel
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Old 02-05-2012, 02:05 PM
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Itwont run because the ECM is not recieving the pulse from the distributor you put in, which is the wrong one.
You need to go back to the distributor type you had and fix the problem it had to begin with.
The injectors cant spray even if there is fuel pressure as the ECM runs the injectors and it is not getting the signal from the distributor anymore.
Didnt you wonder what to do with the extra connector that was leftover?
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Old 02-05-2012, 02:30 PM
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Ya I did wonder what was going to happen w extra plug but IV smoked 2 coils dnt knw what to do
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Old 02-05-2012, 02:34 PM
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Did the coils actually smoke?
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Old 02-06-2012, 06:58 AM
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No the coils didn't smoke.I lost spark from the coil after it started
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Old 02-06-2012, 08:55 AM
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FYI, GM does not usually install parts that are not needed. If there are electrical connectors that used to be connected and now aren't, it's a good bet that something isn't going to work...
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Old 02-06-2012, 05:17 PM
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Quote:
Originally Posted by ragguy
No the coils didn't smoke.I lost spark from the coil after it started
Could be cheap *** parts or maybe the alternator is passing AC current killing it or it is way overcharging burning out the module /coil.
Pull the alternator and have it tested, then go by some good quality parts and put them in,If the alternator is overcharging, replace it too. Good Luck.
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Old 02-08-2012, 03:34 PM
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LAtech is right, that distributor will put out spark but missing wire to ECM will stop DRP (Distributor Reference Pulse) from occuring, hence no injector pulse.

The small cap hei you had and coil are so reliable for hundereds of thousnds of miles I don't know what is going wrong. Stock old JY parts from GM are better then some replacement parts.

The EST module in distributor is what fires coil and sends DRP to ECM to fire injectors. It gets signal from pick up coil in top of distributor under brass cover. If either of these goes bad you could not only loose spark but loose injector firing. It needs heat sink compond under it when mounted and screws that hold it down are grounds.

If your origanal distributor shaft is not worn and reluctor on top not cracked you can soak shaft with solvent and work it back and forth and it will come out, then replace pick up coil inside, EST module and coil. No reason to change a perfect system. You sure your coils are no good or just no spark because of bad pich up coil or EST? Those stock coils are bullet proof, I can't ever remeber finding one bad.

Don't try to send a signal to ECM!!! It is a modified square wave from EST, if you just send a signal from distributor you will burn up ECM...
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