cold start alternitive
Thread Starter
Pro
Joined: Feb 2009
Posts: 711
Likes: 3
From: charlottesville Virginia
cold start alternitive
I put new runners on my car that don't have a place for the cold start injector. Is there any alternative for getting it to start easier besides switching the runners back out? Would getting a chip from PCM for less and telling them I no longer have it help me at all?
Thanks
Thanks
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
My SuperRam runners do not have a cold start injector hole. It takes a crank or two longer to start, but it should not be a problem. I have been running this for about 3 years.
You could modify the chip to add a little extra fuel at start up, but it is probably not worth the money to have done.
You could modify the chip to add a little extra fuel at start up, but it is probably not worth the money to have done.
Melting Slicks
Joined: Dec 2006
Posts: 3,374
Likes: 86
From: Corbin KY
You dont need it! Chances are it does not work anyways, most of them do not work and people never know it. When I still had the 9th in mine it always started fine and i found out when I removed it that it had not been working for some time.
Team Owner
Joined: Jan 2003
Posts: 20,292
Likes: 239
From: Summerland B.C. Canada
My SuperRam runners do not have a cold start injector hole. It takes a crank or two longer to start, but it should not be a problem. I have been running this for about 3 years.
You could modify the chip to add a little extra fuel at start up, but it is probably not worth the money to have done.
You could modify the chip to add a little extra fuel at start up, but it is probably not worth the money to have done.
Took 2 seconds to start with stock Prom, took 1 second with custom PROM. Is one second worth it ??If the rest of my motor was stock, I wouldn't have bothered with a custom PROM.
Instructor
Joined: Nov 2008
Posts: 196
Likes: 3
On my 86 I was having some issues with the cold start valve. I had pcmforless burn me a chip that doesn't use it. The car starts better when cold or hot. I don't know what they changed but it was worth it. Oh, I didn't have big starting issues. Just turned over for several seconds before starting. Now it starts right away.
Thread Starter
Pro
Joined: Feb 2009
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From: charlottesville Virginia
right now when i try to start the car cold it takes 30 seconds or more and repeated times turning the ignition, pumping gas and praying. On a warm start it starts up just fine, I didnt have this problem before switching runners and deleting the cold start. Do you think there is another issue causing it not to start cold besides the cold start injector?
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Thread Starter
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Joined: Feb 2009
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From: charlottesville Virginia
Melting Slicks
Joined: Dec 2006
Posts: 3,374
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From: Corbin KY
right now when i try to start the car cold it takes 30 seconds or more and repeated times turning the ignition, pumping gas and praying. On a warm start it starts up just fine, I didnt have this problem before switching runners and deleting the cold start. Do you think there is another issue causing it not to start cold besides the cold start injector?
Le Mans Master
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From: levittown pa. usa Even a bad day with my `Vette, is better than a good day at work
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What kind of runners did you use? BTW, if you use a chip out of an 89, it eliminates the cold start injector and reprograms the injectors to give more fuel when cold.
Race Director
Joined: Apr 2003
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From: moraga ca
30 seconds is way too long. You'll go through a starter every oil change. I agree with above, check your fuel pressure. If you have adequate pressure, get chip to give you extra fuel without the 9th injector.
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Joined: Feb 2009
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From: charlottesville Virginia
I put a gauge on it this weekend, Did not have pressure when I first started cranking it but it started to build up while i was doing so, after it started and we shut the car off it kept pressure for the rest of the day. any ideas on if there is another problem and what the solution may be?
Melting Slicks
Joined: Dec 2006
Posts: 3,374
Likes: 86
From: Corbin KY
I put a gauge on it this weekend, Did not have pressure when I first started cranking it but it started to build up while i was doing so, after it started and we shut the car off it kept pressure for the rest of the day. any ideas on if there is another problem and what the solution may be?
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From: charlottesville Virginia
Melting Slicks
Joined: Feb 2006
Posts: 2,753
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From: backwoods upstate ny
I put a gauge on it this weekend, Did not have pressure when I first started cranking it but it started to build up while i was doing so, after it started and we shut the car off it kept pressure for the rest of the day. any ideas on if there is another problem and what the solution may be?
pedal down while cranking tells ecm the driver thinks the engine is 'flooded' and ecm turns off injectors...rapid enuf pedal pump may be interpreted by ecm as 'pedal down"...a slow leaking injector 'might' flood the engine, hence your 'pedal pump' may be effective...rare but has happened.
chip from an 89 good as stated above.
relay not likely perp.
spark timing error may extend cranking time, esp if retarded.
btw, 'instant start' kills your engine bearings...better for your wallet (not for shop's) if the engine cranks for a few before firing off.
Last edited by redrose; Dec 1, 2009 at 04:19 PM.
Thread Starter
Pro
Joined: Feb 2009
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From: charlottesville Virginia
how long did it sit prior to test ?...after 12 hr sit it should still show 10 psi or you have something leaking, pulsator (inside fuel tank), pressure reg diaphram (pull vac hose and smell for gas, should be none), fuel filter (alum filter bodies are paper-thin and corrosion pinholes occur over time), injector slow leak, etc...after a week most will drop to 0...how long was 'rest of day'?
pedal down while cranking tells ecm the driver thinks the engine is 'flooded' and ecm turns off injectors...rapid enuf pedal pump may be interpreted by ecm as 'pedal down"...a slow leaking injector 'might' flood the engine, hence your 'pedal pump' may be effective...rare but has happened.
chip from an 89 good as stated above.
relay not likely perp.
spark timing error may extend cranking time, esp if retarded.
pedal down while cranking tells ecm the driver thinks the engine is 'flooded' and ecm turns off injectors...rapid enuf pedal pump may be interpreted by ecm as 'pedal down"...a slow leaking injector 'might' flood the engine, hence your 'pedal pump' may be effective...rare but has happened.
chip from an 89 good as stated above.
relay not likely perp.
spark timing error may extend cranking time, esp if retarded.
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
Melting Slicks
Joined: Dec 2006
Posts: 3,374
Likes: 86
From: Corbin KY
how long did it sit prior to test ?...after 12 hr sit it should still show 10 psi or you have something leaking, pulsator (inside fuel tank), pressure reg diaphram (pull vac hose and smell for gas, should be none), fuel filter (alum filter bodies are paper-thin and corrosion pinholes occur over time), injector slow leak, etc...after a week most will drop to 0...how long was 'rest of day'?
pedal down while cranking tells ecm the driver thinks the engine is 'flooded' and ecm turns off injectors...rapid enuf pedal pump may be interpreted by ecm as 'pedal down"...a slow leaking injector 'might' flood the engine, hence your 'pedal pump' may be effective...rare but has happened.
chip from an 89 good as stated above.
relay not likely perp.
spark timing error may extend cranking time, esp if retarded.
btw, 'instant start' kills your engine bearings...better for your wallet (not for shop's) if the engine cranks for a few before firing off.
pedal down while cranking tells ecm the driver thinks the engine is 'flooded' and ecm turns off injectors...rapid enuf pedal pump may be interpreted by ecm as 'pedal down"...a slow leaking injector 'might' flood the engine, hence your 'pedal pump' may be effective...rare but has happened.
chip from an 89 good as stated above.
relay not likely perp.
spark timing error may extend cranking time, esp if retarded.
btw, 'instant start' kills your engine bearings...better for your wallet (not for shop's) if the engine cranks for a few before firing off.