HSR Swap wont start
Thread Starter
Joined: May 2003
Posts: 445
Likes: 6
From: Delco pa
Car: 85 Z28
Engine: GMPP 350 HSR
Transmission: 700R4
Axle/Gears: 4th gen 3.42 Posi LS1
HSR Swap wont start
I just swapped from a TPI to the HSR now it wont start. I have spark and fuel pressure. The fuel pressure is at like 25lbs while cranking. The big question is I eliminated the cold start injector could that be the cause? Or I just dont have my timing right yet. Maybe a tooth off.. Stock ECM for now.
Ok just moved all the plug wires counter clockwise 1 notch now it at least back fires a little. I think I am 180 out on the distributor. Ill be removing it in the AM to double check. I also readjusted the fuel pressure and got it up to 45.
Ok just moved all the plug wires counter clockwise 1 notch now it at least back fires a little. I think I am 180 out on the distributor. Ill be removing it in the AM to double check. I also readjusted the fuel pressure and got it up to 45.
Last edited by seiplentz; Jul 4, 2013 at 08:48 PM. Reason: updated info..
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: HSR Swap wont start
Not really a intake question ; should be in the engine dept
Pointless trying anything until you have confirmed the timing is correct.
No CSI may mean longer crank time but will not prevent it starting if everything else is set correct
No CSI may mean longer crank time but will not prevent it starting if everything else is set correct
Thread Starter
Joined: May 2003
Posts: 445
Likes: 6
From: Delco pa
Car: 85 Z28
Engine: GMPP 350 HSR
Transmission: 700R4
Axle/Gears: 4th gen 3.42 Posi LS1
Re: HSR Swap wont start
It was the timing. I did have it 180 out. Fired right up. They definitely dont give you much room to work on the distributor. Or adjust the fuel pressure.
Re: HSR Swap wont start
When you eliminated the CSI, if you didn't reprogram for that,,, you'll eventually need to. Mine cranked with little to no trouble until it got in the 40s - then it took multiple attempts.
Thread Starter
Joined: May 2003
Posts: 445
Likes: 6
From: Delco pa
Car: 85 Z28
Engine: GMPP 350 HSR
Transmission: 700R4
Axle/Gears: 4th gen 3.42 Posi LS1
Re: HSR Swap wont start
I have not reprogrammed for anything yet. The ECM is completely stock. I have a Holley commander on the way so that will help. It does run pretty good as is though.
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