84 backfire issues

4087 Views 12 Replies 5 Participants Last post by xCrossFirex, Mar 31, 2013

tr6ranger

Discussion Starter · Mar 21, 2013

I am new to this site and threads so please bear with me. I have a 1984 crossfire and when it gets up to temp it starts dying if you give it any gas backfires and dies. It will restart every time but same problem when you try to give it gas. Also, when the car is started and it is cold it runs great, it only starts its problem after 20 to 25 miles or so. Does anyone know what is going on with this car? I sprayed wd-40 around the intake and it never idles up so I dont think its sucking air. Also this is my first vette. I have had it a year and it started this about 2 weeks ago. Thanks for any help I can get

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toobroketoretire

· #2 · Mar 22, 2013

tr6ranger said:
I am new to this site and threads so please bear with me. I have a 1984 crossfire and when it gets up to temp it starts dying if you give it any gas backfires and dies. It will restart every time but same problem when you try to give it gas. Also, when the car is started and it is cold it runs great, it only starts its problem after 20 to 25 miles or so. Does anyone know what is going on with this car? I sprayed wd-40 around the intake and it never idles up so I dont think its sucking air. Also this is my first vette. I have had it a year and it started this about 2 weeks ago. Thanks for any help I can get

I am the resident CrossFire geru and I can help you out if you e-mail me at [email protected]

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toobroketoretire

· #3 · Mar 22, 2013

CrossFires Now Popular?

In the past 3-4 years very few SmokinVette members had '84 CrossFires but it seems all of a sudden they're popping up often. Same as the '82 CrossFires because lately they have been popping up often too. So did the CrossFires suddenly become popular?

The CrossFires are a good reliable system that just needs an '85 fuel pump and more pressure to run with the earlier Tuned Ports and I'll be very happy to help anyone who is having CrossFire issues. Just e-mail me at [email protected]

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Wingnut

· #4 · Mar 23, 2013

84 Crossfire

wnedbutton: Wow I wish I had seen this before. I had an 84 and yes it ran great I had the 85 fuelpump did the ram air cut the hole in the front of the radiator shift kit had it 9 years just wanted to get more HP. I think he will like it:drool5:

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toobroketoretire

· #5 · Mar 23, 2013

Wingnut said:
wnedbutton: Wow I wish I had seen this before. I had an 84 and yes it ran great I had the 85 fuelpump did the ram air cut the hole in the front of the radiator shift kit had it 9 years just wanted to get more HP. I think he will like it:drool5:

When the TH700R4 was introduced the intake systems had to be changed to reflect the port velocity of engines spinning 1500 rpm at cruising speeds.

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tr6ranger

Discussion Starter · #6 · Mar 24, 2013

I love this car alot. It sounds like I need to get an 85 fuel pump but this car is amazine. Its my first vette and I am sure I will keep it for years to come. It does have a larger radiator to help with the cooling. I also changed the a/c to the 134a and new seat covers. plus I painted it Ferrari (paint code 322) red

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[email protected]

· #7 · Mar 24, 2013

tr6ranger said:
I am new to this site and threads so please bear with me. I have a 1984 crossfire and when it gets up to temp it starts dying if you give it any gas backfires and dies. It will restart every time but same problem when you try to give it gas. Also, when the car is started and it is cold it runs great, it only starts its problem after 20 to 25 miles or so. Does anyone know what is going on with this car? I sprayed wd-40 around the intake and it never idles up so I dont think its sucking air. Also this is my first vette. I have had it a year and it started this about 2 weeks ago. Thanks for any help I can get

backfiring is usually a timing issue, but it could also be a low fuel pressure problem

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tr6ranger

Discussion Starter · #8 · Mar 26, 2013

Wow, thank you all for the help. I have not had time to mess with the timing issue but I will be on it like a bad rash tomorrow and will keep you updated as to what happens. I m gonna check the timing first and go from there. Thank you all once again and thank you Steve!

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xCrossFirex

· #9 · Mar 28, 2013

Mine did the exact same thing, i had to replace the cap and rotor button and wires, be sure to check before you buy tho

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tr6ranger

Discussion Starter · #10 · Mar 29, 2013

I will. Ive been trying to check the timing but as we are building a house and work I just havnt had the time. I am gonna shoot for tomorrow after work to check the timing. I went and bought a new timing light so hopefully I can get it checked tomorrow. Thanks for all the help

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tr6ranger

Discussion Starter · #11 · Mar 30, 2013

:burnout:I just reset the timing and test drove the car. It has never ran so good since I have owned it. Thank you all for your help. I am a happy Corvette owner.:beer-fresh:

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[email protected]

· #12 · Mar 30, 2013

enjoy

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xCrossFirex

· #13 · Mar 31, 2013

sweet!! :burnout:

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