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#1
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Low power/misfires
I want to get my 740 going again but actually get it right. It’s alway had the misfiring and low power. Not sure where to start. It has the fuel pin groud down and a t3t4. That about all I know about the car
https://youtube.com/shorts/U8FXy7fkyYk?feature=share https://youtube.com/shorts/JgHcENiBRx8?feature=share |
#2
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Yes indeed hard to know where to start. I have little experience with those two particular mods.
So you know nothing about the car or its history?
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1985 744 gle d24t 1985 745 gle d24t |
#3
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I don’t really know that much about it. It supposedly has head studs. I do know a guy on here owned it, I believe his name is “stroked383”.
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#4
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Never hurts to start with the basics right?
Engine needs good compression, good supply of fuel, good supply of air, correct base engine adjustment (cam timing, pump timing, valve clearance), and correctly functioning injection pump and injectors to run well. If it has those things, it WILL run well. I would make a checklist of steps and go through them systematically if you want to make it right. - routine maintenance (fluids, filters) - compression test, and have injectors tested and as necessary cleaned/reset/rebuilt while they're out for that by a qualified shop - timing check, timing belt replacement if necessary - valve clearance check, adjustment if necessary - fuel system examination, check for excessive supply restriction and air intrusion These things should go a long way towards getting it running normally, regardless of the modifications.
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86 745 D24T/ZF 345k lifted 2.5" 83 764 D24T/M46 155k |
#5
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I watched your videos and it doesn't sound too unhealthy to me other than obviously the fuel pump needs to be turned back down to get rid of the smoke.
You say misfiring and low power? When and how does it misfire? At idle, under load, ?? Is it a steady miss like a weak or dead cylinder or is it an intermittent stumble or what?
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86 745 D24T/ZF 345k lifted 2.5" 83 764 D24T/M46 155k |
#6
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Under load. Probably starts around 1500rpm to 4000
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#7
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Are you able to research his posts to find out more about it? I don't presently have the time to do it for you unfortunately.
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1985 744 gle d24t 1985 745 gle d24t |
#8
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It’s definitely more of a intermittent bucking stumble, hesitation
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