weird start up...
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Senior User
Joined: Sep 2009
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From: in denial.
weird start up...
i just changed both batteries and the alternator ( thank god paz works at checkers-at her employee discount it was under $275.00 out the door for everything ! ) and everything seems good now-but...when i start the truck in the morning ( cold-well, cold for hawaii. 70 degrees or so...) i turn the key and step the gas peddle once to set the hi idle, when the wait to start light goes out i turn it over and it fires immediately, but then for the first 3-5 seconds it acts just like it does when you gonna run outta gas-the idle jumps and skips, just a bit, ( rpm surges, then resurges,etc...)and after a few seconds it runs like normal. no issues while driving, and it dont do it on warm restarts. just the innitial cold start. it wont die or anything, just seems weird as it has never done that before. hope its not a 'harbringer of doom' symptom. any ideas ? thanks to all.....
More Turbo
Joined: May 2010
Posts: 618
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From: Grand Rapids
Sounds like air intrusion to me
More Turbo
Joined: May 2010
Posts: 618
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From: Grand Rapids
Not really. You should be able to start it without GPs at that high ambient temp but it does put a little bit of extra strain on the starter which is more difficult and expensive to replace than a set of GP's. Direct injection diesels will start easier without GPs than IDIs because there is no pre-combustion chamber in the head but its always better to use the GPs.
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Senior User
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From: in denial.
i just did all the return lines and fittings, t-caps, o-rings, etc 5 months ago-and the truck starts on a dime, just snorts a little for the first 5-10 seconds. and only first start, all other starts thruout the day ( even 5-7 hours later ) are 'normal', no surging.
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From: Westfield, MA
I second the diesel kleen. My truck was hard to start when cold. I replaced the batteries, battery cables, glow plug controller and glow plugs, and installed an electric fuel system and it still started hard. Most of the things I changed needed to be changed anyway but non of it fixed the hard starting. Then I ran a bottle of Amsoil Injector cleaner through it and it has been starting great for over a week now and the temperatures at night have been dropping down into the 20's. Saturday night will be the real test, its supposed to drop down to about 10 degs. F.
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Joined: Mar 2010
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From: Timmins, Ontario, Canada
This is also what is specified in the manual for the IDIs. Don't kill your starter cranking. Don't forget this is mechanical diesel injection, the gas engine rules don't apply.
Cargo Master
Joined: Mar 2010
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From: Higginsville, MO
to go even further.
in the ford diesel engine supplement for a 1994.5 and previous 7.3L Diesel Indirect Injected Engine your supposed to mash the pedal to the floor 1 time to set the high idle then release and then push the pedal halfway down if above freezing and all the way down below 32 degrees like northern said
in the ford diesel engine supplement for a 1994.5 and previous 7.3L Diesel Indirect Injected Engine your supposed to mash the pedal to the floor 1 time to set the high idle then release and then push the pedal halfway down if above freezing and all the way down below 32 degrees like northern said
More Turbo
Joined: May 2010
Posts: 618
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From: Grand Rapids
Both wrong. Hold the pedal halfway while starting (Until it starts) and fully down when very cold (Below freezing).
This is also what is specified in the manual for the IDIs. Don't kill your starter cranking. Don't forget this is mechanical diesel injection, the gas engine rules don't apply.
This is also what is specified in the manual for the IDIs. Don't kill your starter cranking. Don't forget this is mechanical diesel injection, the gas engine rules don't apply.
Originally Posted by 1994F2507.3L
to go even further.
in the ford diesel engine supplement for a 1994.5 and previous 7.3L Diesel Indirect Injected Engine your supposed to mash the pedal to the floor 1 time to set the high idle then release and then push the pedal halfway down if above freezing and all the way down below 32 degrees like northern said
in the ford diesel engine supplement for a 1994.5 and previous 7.3L Diesel Indirect Injected Engine your supposed to mash the pedal to the floor 1 time to set the high idle then release and then push the pedal halfway down if above freezing and all the way down below 32 degrees like northern said
The high idle should be sufficient to get the engine running if your cold start advance, high idle and glowplugs are working properly.
My truck has been starting this way with no problems at 7f (-14c). Replacing a starter costs a couple of hundred bucks compared to several hundred for engine and head work.
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Joined: Mar 2010
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From: Timmins, Ontario, Canada
Thanks 1994F250, I was recalling that supplement, didn't have the exact wording in mind!
That'll fix your starting problem right up! I actually struggled with that one for the first while I owned this truck.
Scratcher, sure, if its not needed; but if your truck is not starting and you give it enough to start that isnt making it madly rev.
If you know your throttle and your engine you can start with heavy throttle and pull it back as it starts up without letting it fly. Yes, you dont literally follow the manual and hold it to the floor and fire your engine to 3000rpm without using your head. That doesnt mean you chug away with no throttle and a struggling start.
You may be able to tweak this and that for a smooth start in the warmer areas but where it gets cold, there's no way high-idle only starts are going to work all year around.
That'll fix your starting problem right up! I actually struggled with that one for the first while I owned this truck.
Scratcher, sure, if its not needed; but if your truck is not starting and you give it enough to start that isnt making it madly rev.
If you know your throttle and your engine you can start with heavy throttle and pull it back as it starts up without letting it fly. Yes, you dont literally follow the manual and hold it to the floor and fire your engine to 3000rpm without using your head. That doesnt mean you chug away with no throttle and a struggling start.
You may be able to tweak this and that for a smooth start in the warmer areas but where it gets cold, there's no way high-idle only starts are going to work all year around.
More Turbo
Joined: May 2010
Posts: 618
Likes: 3
From: Grand Rapids
Scratcher, sure, if its not needed; but if your truck is not starting and you give it enough to start that isnt making it madly rev.
If you know your throttle and your engine you can start with heavy throttle and pull it back as it starts up without letting it fly. Yes, you dont literally follow the manual and hold it to the floor and fire your engine to 3000rpm without using your head. That doesnt mean you chug away with no throttle and a struggling start.
You may be able to tweak this and that for a smooth start in the warmer areas but where it gets cold, there's no way high-idle only starts are going to work all year around.
If you know your throttle and your engine you can start with heavy throttle and pull it back as it starts up without letting it fly. Yes, you dont literally follow the manual and hold it to the floor and fire your engine to 3000rpm without using your head. That doesnt mean you chug away with no throttle and a struggling start.
You may be able to tweak this and that for a smooth start in the warmer areas but where it gets cold, there's no way high-idle only starts are going to work all year around.