76 FJ 40 that runs good when cold but cylinders 3 & 4 done show any spark when warm. Do I need a new coil. Plug wires are fairly new. Is timing the problem. Spits and sudders at idle.

5

Asked by Nov 16, 2013 at 02:16 PM about the 1976 Toyota FJ40

Question type: Maintenance & Repair

1 Answer

59,205

If you have an inline four cylinder I'd suspect a failing head gasket. It may be opening up when warm and causing a compression loss. Warm it up until it starts misfiring. Then compression test those two cylinders. If they're very low or zero then it's most likely a blown head gasket between those two cylinders. HTH. -Jim

Your Answer

Add photo

Related Questions

  • Engine Doesn't start - Just purchased from private owner - suspect carb - lookin for help 9 answers

    I just bought this 1971 FJ40 (2F Engine). It ran great during the test drive. I got 40 miles down the road and everything went wrong. I was climbing a hill and it slowly lost power as I increased t...

    1971 Toyota FJ40

    -

    Maintenance & Repair

  • cylinder 3 misfires could it be the timing belt? 7 answers

    so far this is what i've done as the car is running it puts and the engine vibrates alot, so one by one i pulled the wires from cylinder 1 all the way to 4 and when i got to cylinder 3 there was no di...

    1992 Toyota Tercel 2 Dr DX Coupe

    -

    Maintenance & Repair

  • toyota T-100, misfire on number 4 cyl. 7 answers

    1996 Toyota T-100 4x4, 3.4 Liter V-6. Mis-fire on number 4 cylinder. I changed plugs wires and swapped coil packs, still misfires.

    1996 Toyota T100 2 Dr DX 4WD Extended Cab SB

    -

    Maintenance & Repair

  • Intermittent rough down idle of 1998 Toyita Camry 4 cylinders 6 answers

    My 1998 Toyota Camry 4 cylinders runs perfect at now 149k mikes, automatic transmission. It has just recently happened that intermittent rough down Idle occurs. While stopping at the red light, the ...

    1998 Toyota Camry LE

    -

    Maintenance & Repair

  • cylinder 2 misfiring 2 answers

    cylinder 2 misfires what could it be? so far this is what i've done as the car is running it puts and the engine vibrates alot, so one by one i pulled the wires from cylinder 1 all the way to 4 and w...

    1994 Toyota Tercel 4 Dr DX Sedan

    -

    Maintenance & Repair

Search Toyota FJ40 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Toyota FJ40 Experts

#1 thekillaman38
thekillaman38
Reputation 40
#2 Adam Morgan
Adam Morgan
Reputation 20
#3 landman
landman
Reputation 10
View All

Related Models For Sale

Used Toyota Land Cruiser
18 Great Deals out of 1,190 listings starting at $4,095
Used Ford F-150
3,005 Great Deals out of 207,341 listings starting at $1,000
Used Ford Mustang
537 Great Deals out of 42,626 listings starting at $1,699
Used Ford Bronco
183 listings
Used Toyota Pickup
113 listings starting at $3,980

Used Cars For Sale