engine diagnosis question

65

Asked by Dec 09, 2009 at 03:48 PM about the Chevrolet S-10

Question type: Car Customization

iv swapped my s10 to a v8 and it runs great at an idol an up to 4000 rpm. my problem is that it starts to cut out almost like its missing after4000 rpm. if its held at that rpm or steadly climbs, but it doesnt do it if u rais the rpms quickly. my question, whats the problem??

2 Answers

150

there are a lot of things that can be the problem, did you change the computer for the truck. ignition,vacuum advance or electronic, fuel supply(psi) carb size, cam profile, intke and exhaust flow. what did you get the motor out of ir did you build it? 4000 is a lot of rpm to run a motor at with out a load on it. i hope some of this helps maybe give an idea of some things to look at. steve

hey shelby, it sounds like a fuel delivery problem. if you snap the throttle open, the accelerator pump will mask a lean out condition. if it was ignition related, it would generally get worse with rpm. hei is especially bad about that.

Your Answer

Add photo

Related Questions

  • Exhaust Question 12 answers

    I have a 2002 ZR2 with duals on it already what muffler would sound best on it?

    2002 Chevrolet S-10

    -

    Car Customization

  • 4.3 VS 302 1 answer

    I have a 1985 S-10 Low-rider, the engine I have in it is a tired 2.5, with no mods out there that I can find. Everyone and their uncle has a S-10 with 350 and up in S-10's, nothing is wrong with this,...

    1985 Chevrolet S-10 STD Standard Cab SB

    -

    Car Customization

  • Motor size 23 answers

    What is the biggest motor that can be put in a Chevrolet S-10 pickup?

    1999 Chevrolet S-10 2 Dr LS Standard Cab LB

    -

    Car Customization

  • bagging the front 2 answers

    my question is why do you have to buy newa arms when bagging the truck? or do you have o will the factory a arms not do the job. if anyone can tell me any info on this it would be great thanks.

    1994 Chevrolet S-10

    -

    Car Customization

  • Can the ignition control module on a 1997 Chevy S-10 be tested on a testor , be passed as OK and still be failing when installed on the engine? 2 answers

    Truck would start, but would not run when throttle was opened. Replaced fuel pump, Pressure regulator,and filter. It started right up, responded to throttle just fine, and I took it out for a test ...

    1997 Chevrolet S-10 2 Dr LS 4WD Extended Cab SB

    -

    Maintenance & Repair

S-10

Looking for a Used S-10 in your area?

CarGurus has 1,456 nationwide S-10 listings starting at $1,495.

ZIP:

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,230
#2 Trebor66
Trebor66
Reputation 950
#3 John Saffrahn
John Saffrahn
Reputation 930
View All

Related Models For Sale

Used Ford Ranger
179 Great Deals out of 6,251 listings starting at $1,300
Used Chevrolet Silverado 1500
2,049 Great Deals out of 159,125 listings starting at $895
Used Chevrolet Colorado
231 Great Deals out of 21,883 listings starting at $2,495
Used GMC Sonoma
6 Great Deals out of 477 listings starting at $2,700
Used Toyota Tacoma
549 Great Deals out of 37,717 listings starting at $2,900
Used Ford F-150
2,447 Great Deals out of 209,892 listings starting at $895
Used Dodge Dakota
109 Great Deals out of 3,929 listings starting at $1,500
Used Chevrolet Blazer
3 Great Deals out of 1,126 listings starting at $1,995
Used Nissan Frontier
412 Great Deals out of 26,037 listings starting at $2,400
Used GMC Sierra 1500
911 Great Deals out of 64,475 listings starting at $1,500
Used GMC Canyon
110 Great Deals out of 7,462 listings starting at $2,950
Used Dodge Ram 1500
443 Great Deals out of 11,488 listings starting at $700
Used Chevrolet C/K 1500
885 listings starting at $4,599
Used Chevrolet Camaro
146 Great Deals out of 35,590 listings starting at $1,995
Used Chevrolet Tahoe
624 Great Deals out of 27,680 listings starting at $600