I just purchased this Cadillac it has the ht4100 engine in it with 130k miles it starts but stalls after 3 seconds unless i peddle the accelerator over an over while burping poping and back firing._.It has new fuel filter.NEED HELP Please
Does it ever smooth out at a high idle? Hard to diagnose with old ignition parts. That bad running is probably why somebody sold it. I guess I would give it new plugs, wires, cap, and rotor and an oil change for starters.
It does not smoothing out at hi idle.It has oil change and new plugs and wires.I was told its a plugged cat converter are fuel injector problem can this be the problem ?
1983 Cadillac deville ht4100 stalling backfiring and missing
When i crank the car it starts first turn but shortly after it starts to run.
it runs rough and die.I would have to push and let off the accelerator constantly for it to continue running
but as soon as i let off the accelerator to let it idle are go into gear it dies.
I checked the diagnostic codes and i came up with a weird E.8.8 i think with 14 and 52
COULD YOU guys PLEASE give me suggestions so i can FIX MY CAR
Erase all the codes. See what returns. Popping, backfiring could be as simple as mis routed plug wires. Recheck your firing order. Could be a cracked, worn out distributor cap. If all that is OK, then pull a valve cover to make sure all the rocker arms move the same amount. One side at a time. I presume you're a better than average mechanic or you wouldn't have bought a car with a running, idling issue. Especially that old.
Since it starts easily, it very well could be a clogged catalytic or maybe a fuel pump. I could test both of them in about 3 minutes in my shop. I think your easiest and cheapest bet is to borrow a vacuum gauge and fuel pressure tester at your local parts store. Some parts stores loan/rent some tools. FP is simple enough. If the vacuum is very low you probably do have a clogged catalytic. You can either chop it off with a sawzall or tow it to a muffler shop to be fixed.
My mechanic told me it was a fuel injector
because its not spraying correctly and starts a mini fire with the air cleaner off
So i orderd a fuel injector on rock auto.Com
wish me luck guys i surely hope this is the problem
Also my mechanic says the spray pattern looks week
Any of you guys know how the fuel injector spray pattern is suppose to look?
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