My "New engine wont start" thread!
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From: Orlando,Fl
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shifting into gears is a problem. I couldnt find where to put the 93 ground wire, so i had to use the 95 pics. Its on the engine pass. motor mount, i should have removed the paint better but it was hard to get to at the time. Ill do that today.
When i restart it i have to floor it to get it to run.
I let it sit for 30 min came and its down to 20psi.
1 hrs later its at 15psi.
When i restart it i have to floor it to get it to run.
I let it sit for 30 min came and its down to 20psi.
1 hrs later its at 15psi.
Last edited by windsma; Dec 20, 2007 at 02:46 PM.
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From: Orlando,Fl
That's about normal... there is always the possibility that your injectors are stuck closed. If it gets to that point take them out and just let them soak in some injector cleaner over night, reinstall and see what happens.
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anything else i should try before tonight
After i installed the oil pressure unit, i took it down the road,
Not a whole lot of power, but i needed to check my trans fluid again.
And when i shifted or was at a stop it would die. I would have to hold it to the floor to get it to restart
After i installed the oil pressure unit, i took it down the road,
Not a whole lot of power, but i needed to check my trans fluid again.
And when i shifted or was at a stop it would die. I would have to hold it to the floor to get it to restart
Last edited by windsma; Dec 20, 2007 at 04:09 PM.
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I read here that the VSS may cause my idle prob.
is that possable due to my VSS pigtail being broken (im getting one shipped anyday.)
check your VSS (vehicle speed sensor)
if the computer see's no vehicle speed it thinks it is ideling.
when you are on the decel, throttle closed, it will run the IAC all way closed trying to bring the engine rpm down, but it can't because you are on decel.
On LT1 swaps I have done without an VSS hooked up I had that exact problem, and have watched it do it on datalogs.
By the time you slow down enough that the rpm goes to desired idle, the IAC can't pick up fast enough.
try coming to a stop with one foot on the gas holding the throttle slightly open. It will probaby stay running fine.
Could try your cruise..my bet is it won't work, because your vss is bad. or a wiring problem
good luck
if the computer see's no vehicle speed it thinks it is ideling.
when you are on the decel, throttle closed, it will run the IAC all way closed trying to bring the engine rpm down, but it can't because you are on decel.
On LT1 swaps I have done without an VSS hooked up I had that exact problem, and have watched it do it on datalogs.
By the time you slow down enough that the rpm goes to desired idle, the IAC can't pick up fast enough.
try coming to a stop with one foot on the gas holding the throttle slightly open. It will probaby stay running fine.
Could try your cruise..my bet is it won't work, because your vss is bad. or a wiring problem
good luck
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The number one reason for fuel pressure bleding off is sticky check ball in fuel pump. BUT since you had funky fuel in the car for so long, chances are good the fuel rails and the injectors are gummed to say the least. Lift up the fuel rails and jump the fuel pump prime connector to see if you have any drippers. You could also crank it over and see what each injector spray pattern looks like.
Wouldn't be a bad idea to have the injectors professionally cleaned on the car with a cleaner like I use from 3M.
Wouldn't be a bad idea to have the injectors professionally cleaned on the car with a cleaner like I use from 3M.
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Thanks Speedy,
Would a reg. auto garage have a tool to clean injectors, or should i go to the parts store and get some inj. cleaner and let them soak. Its really gonna suck if i have a bad one b/c i sold my 95 intake w/inj. While the engine was down i did store the Fuel Rail w/inj. on a shelf upside down. Would that hurt anything?
Thankyou everyone i lost my DL last year and its not easy for me to get around. Thats why i ask such stupid questions.
Im going to the shop today to work on the Z. VSS pigtail, and to check the Inj.s
Would a reg. auto garage have a tool to clean injectors, or should i go to the parts store and get some inj. cleaner and let them soak. Its really gonna suck if i have a bad one b/c i sold my 95 intake w/inj. While the engine was down i did store the Fuel Rail w/inj. on a shelf upside down. Would that hurt anything?
Thankyou everyone i lost my DL last year and its not easy for me to get around. Thats why i ask such stupid questions.
Im going to the shop today to work on the Z. VSS pigtail, and to check the Inj.s
Last edited by windsma; Dec 24, 2007 at 08:52 AM.
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The VSS solved the idle problem.
I still had to prime the fuel pump. To start it.
I am soaking the injectors now and maybe for a few days. Will the O rings be damaged while soaking or should i remove them?
I still had to prime the fuel pump. To start it.
I am soaking the injectors now and maybe for a few days. Will the O rings be damaged while soaking or should i remove them?
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You need to learn to error on the side of caution. Not cleaning will not damage where as cleaning them in certain cleaners MAY so don't clean them. However, just like gaskets and seals, it's best to replace them.
As far as the pump goes, I think I mentioned a possible problem that you ignored earlier.
So let me see if I have this straight. If you are NOT jumping the pump to turn on, it will not start. Is this correct?????
If you jump the fuel pump prime connector, it will start. Is that correct?
As far as the pump goes, I think I mentioned a possible problem that you ignored earlier.
If you jump the fuel pump prime connector, it will start. Is that correct?
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If it sits for a few hrs. i have to prime the pump w/ the connector.
Once it clears i can turn off the ing. and turn it on and it fires up. so Yes.
The pressure gauge says 45 (turn off engine) stays around 40psi, 1hr later its at 15 then dies down over 2 hrs to 0.
This made me think its a leaky injector. so for $10 i got some inj. cleaner and let them soak.
If that does not work ill buy a new fuel pump.
Once it clears i can turn off the ing. and turn it on and it fires up. so Yes.
The pressure gauge says 45 (turn off engine) stays around 40psi, 1hr later its at 15 then dies down over 2 hrs to 0.
This made me think its a leaky injector. so for $10 i got some inj. cleaner and let them soak.
If that does not work ill buy a new fuel pump.
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If you had a leaky injector that bad, you would have fuel in the oil. In addition, it would run like a pig and that plug would be black.
Also your analogy of starting is slightly incorrect. You need not jump the fuel pump prime connector. Simply turn the key on for 3 seconds without starting KOEO then back off. Do this 5 or 6 times and then finally crank it up.
What I had asked was will it not run unless you jump the pump. Yes it will run without jumping the pump.
Your problem is clearly the check ball in the pump unless you agree with the other problems I asked above.
Good luck from here on out
Cya
Also your analogy of starting is slightly incorrect. You need not jump the fuel pump prime connector. Simply turn the key on for 3 seconds without starting KOEO then back off. Do this 5 or 6 times and then finally crank it up.
What I had asked was will it not run unless you jump the pump. Yes it will run without jumping the pump.
Your problem is clearly the check ball in the pump unless you agree with the other problems I asked above.
Good luck from here on out
Cya
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So far it was a leaky injector,
I soaked them cleaner for over 2 days , installed them
Primed the pump, (the connector is much easier to prime the lines.)
Fired up, held 40-47 psi, 2 hrs later around 30psi.
Everything was running fine so far i will know more tomorrow when i look at the fuel pres. gauge. Im curious to see how much it dips over night.
Valves needed readjusting also. They were really tight, after the lifters pumped up.
I soaked them cleaner for over 2 days , installed them
Primed the pump, (the connector is much easier to prime the lines.)
Fired up, held 40-47 psi, 2 hrs later around 30psi.
Everything was running fine so far i will know more tomorrow when i look at the fuel pres. gauge. Im curious to see how much it dips over night.
Valves needed readjusting also. They were really tight, after the lifters pumped up.
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see avitar pic. that is from a cylinder filling with fuel while i ate in a restaurant for under two hours, and that occurred on initial start up. in addition to what you already stated of course