1997 silverado won't start. Help!!!

[97silvershortbed]

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I have a 1997 Silverado 5.7 auto 2wd with 170,000 miles on motor

I had this truck for about 2 years and only thing that when wrong was a Camshaft Sensor was replaced last year.

I was told that Fuel Pump was replaced at one point also.

While driving last week the truck felt like it misfired a couple times,no codes came up.
Truck sat all night , It was hard to start yesterday,but it start, ran kind of ruff for a while. no codes.

The truck sat for the night, went to start the truck, and it would not fire up.
I checked for spark and it looked good to me.

Also tryed sprayed starting fluid and that didn't help.

I checked the psi on the fuel rail and was 62 psi when I turned the key on.
When fuel pump stoped it was 52-53 psi ,then slowly droped to around 40 ish.

Well I cranked on the starter so much I killed the battery.

I did replace the cap, rotor, Crankshaft sensor and Camshaft sensor and It did start When I used my honda Accord to jump start it.

Service engine soon light came on , I think that might be due to all the starting fluid I sprayed into motor. Just a guess.

I drove Truck around the block, ran good.

I let the truck sit over night and it cranks fine but, won't start again.

[tempfixit]

Originally Posted by 97silvershortbed

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I have a 1997 Silverado 5.7 auto 2wd with 170,000 miles on motor

I had this truck for about 2 years and only thing that when wrong was a Camshaft Sensor was replaced last year.

I was told that Fuel Pump was replaced at one point also.

While driving last week the truck felt like it misfired a couple times,no codes came up.
Truck sat all night , It was hard to start yesterday,but it start, ran kind of ruff for a while. no codes.

The truck sat for the night, went to start the truck, and it would not fire up.
I checked for spark and it looked good to me.

Also tryed sprayed starting fluid and that didn't help.

I checked the psi on the fuel rail and was 62 psi when I turned the key on.
When fuel pump stoped it was 52-53 psi ,then slowly droped to around 40 ish.

Well I cranked on the starter so much I killed the battery.

I did replace the cap, rotor, Crankshaft sensor and Camshaft sensor and It did start When I used my honda Accord to jump start it.

Service engine soon light came on , I think that might be due to all the starting fluid I sprayed into motor. Just a guess.

I drove Truck around the block, ran good.

I let the truck sit over night and it cranks fine but, won't start again.

Do a clyinder compression check.

Also test the igntion coil and pickup coil in distributor.

Is the coil on the distributor cap or seperately bolted to manifold?

[rlsc98]

My 97" 305 CID with 143K had the same prob that i played with for awhile. when damp overnite ,would not start, it would crank but not start.Check the distributor, seems the technical design of its low profile design isnt a good design, coupled with 2 vent screens the size of pencil eraser heads that because of the design get clogged and allow no airflow for condensation to disapate, hence my problem. I had enough of the starting issue that i took it in to a repair shop . Bad dist. design coupled with a worn dist gear that was 13 degrees off. Wish I would of had this info when my truck started this issue. hope this helps.

[j cAT]

hard starting when cold,,no dtc,,,have fuel and spark,,,this is usually the ECT...if the computer thinks its a warm start up you will not command the injectors to stay open long enough...also this does cause a start then a very quick stall in MOST cases..

fuel pressures should not drop off more than 5psi over a few minutes...reg.,injector,or fuel pump...but your fuel supplied should be suffecient for starting..

[HUNTERPAUL]

This chevrolet vorteck engine has poppit valves instead of injectors the poppet valve have a tendency to get stuck closed in moring and not start unually when started the truck will miss for a bit the run fine, GM has a top engine cleaner that will sometimes clean the poppit valves. Regular injector cleaner will have no effect on the problem. There is a GM service bullitin on this problem. Many times the poppet valves have to be replaced with an updated injector system available at aftermarket parts supply can cost 350.00 for the kit.

[97silvershortbed]

I just want to give a undate on my truck.

Well I found out the the distributor cap was not siting flat on distributor.

The old plastic distributor housing was cracked there the screws hold down the cap.

So I ended up buying a new distributor for $79.00 that was made from billet Aluminum. GREAT PRICE!! Truck runs great again!

http://cgi.ebay.com/ebaymotors/Chevy...1%7C240%3A1318

[97silvershortbed]

I just want to give a update on my truck.

Well I found out the the distributor cap was not siting flat on distributor.

The old plastic distributor housing was cracked where the screws hold down the cap.

So I ended up buying a new distributor for $79.00 that was made from billet Aluminum. GREAT PRICE!! Truck runs great again!

http://cgi.ebay.com/ebaymotors/Chevy...1%7C240%3A1318