valve adjustment

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valve adjustment

Postby 89SAMMY » Sat Jan 20, 2007 8:51 pm

i just bought a 90 amigo with the 2.6FI and was wondering if these motors require a valve adjustment? i have always had suzuki samurais and geo trackers so i am used to adjusting valves on a regular basis but i dont know alot about isuzu's. it has 169k on the clock and has just a little bit of clatter.
1989 isuzu trooper 4x4 2.8 5 speed, 2.5 suspension lift, 3inch body lift and 35's. much more to come.
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Postby bendorfold » Sat Jan 20, 2007 9:06 pm

The valves should be adjusted every 15,000 miles.

After 3 or 4, 15k adjustments, only one or two valves will need attention.
Last edited by bendorfold on Sat Jan 20, 2007 9:10 pm, edited 1 time in total.
"Use it up. Wear it out. Make it do. Or do without." War Advertising Council: May, 1944

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mine - 1989 Trooper, 2.6L, 5-spd Manual, 170,742 miles, Stock - SOLD
my son - 1992 Trooper, Auto, DOHC, 225,000 miles (362,102 km), Stock -Still Good
mine - 1996 Trooper, 5-spd Manual, SOHC, 163,849 miles, Aisin Manual Hubs - Totaled
Isuzu mechanic during 1988-1992 Model Years
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Postby 89SAMMY » Sat Jan 20, 2007 9:09 pm

do you know the lash off hand?
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Postby Hack » Sat Jan 20, 2007 9:09 pm

The 2.6 is a good little motor but it does require valve adjustments every 15,000 miles. There is a good write-up on adjusting the valvesin the articles section.

I would also replace the vacuum hoses as they are prone to leak. There are some photos of how the hoses should be routed in the articles section.

Be sure to check the timing belt. A blown timing belt can ruin that motor.

Finally, the heads on the 2.6L are very sensitive to heat. Blown head gaskets, cracked or warped heads are common. So keep and eye on your temp gauge and be sure to maintain the cooling system.
Mario

Trail Truck: 2001 Amigo 4x4, Auto, 3.2L, Rear LSD, Front Aussie Locker, HD Torsion Bars, 2" Lift, BFG M/T KA2 33x10.5R15
RIP: 1988 Troop 2.6L 5spd, Stripped and sent to crusher
RIP: 1998 4WD Rodeo, Auto, 3.2L. Ruined by Daughter #1, stripped and sent to crusher
RIP: 1989 Troop 2.6L 5spd --- Stripped of all good parts. Body and rotted frame sent to the crusher.
RIP: 1999 2WD Amigo, Engine Blown by Daughter #2. Parted out. Sent to crusher.
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Postby 89SAMMY » Sat Jan 20, 2007 9:11 pm

Hack wrote:The 2.6 is a good little motor but it does require valve adjustments every 15,000 miles. There is a good write-up on adjusting the valvesin the articles section.

I would also replace the vacuum hoses as they are prone to leak. There are some photos of how the hoses should be routed in the articles section.

Be sure to check the timing belt. A blown timing belt can ruin that motor.

Finally, the heads on the 2.6L are very sensitive to heat. Blown head gaskets, cracked or warped heads are common. So keep and eye on your temp gauge and be sure to maintain the cooling system.


thanks for the info.
1989 isuzu trooper 4x4 2.8 5 speed, 2.5 suspension lift, 3inch body lift and 35's. much more to come.
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Postby bendorfold » Sat Jan 20, 2007 9:12 pm

The valve lash should be on a sticker under your hood

My '89 is .008
"Use it up. Wear it out. Make it do. Or do without." War Advertising Council: May, 1944

"It is better to keep silent and be thought a fool than to speak and remove all doubt." - maxim

mine - 1989 Trooper, 2.6L, 5-spd Manual, 170,742 miles, Stock - SOLD
my son - 1992 Trooper, Auto, DOHC, 225,000 miles (362,102 km), Stock -Still Good
mine - 1996 Trooper, 5-spd Manual, SOHC, 163,849 miles, Aisin Manual Hubs - Totaled
Isuzu mechanic during 1988-1992 Model Years
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Postby 89SAMMY » Sat Jan 20, 2007 9:14 pm

bendorfold wrote:The valve lash should be on a sticker under your hood

My '89 is .008


thanks
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Postby Night Wolf » Sun Jan 21, 2007 2:26 am

my '94 was .008 for intake and .010 for exhaust IIRC.

When I got my truck with 120k, I know it wasn't done by the previous owner who had it since 95k, and who knows when it was done since then....

I think 15k is a little often myself, it is a big job... atleast more of a pain in the butt then anything. I did have a clicking sound before though, and its gone now, runs better too. I'll probably do it every 20-30k..... or sooner if I have the time.

I am kinda shocked Isuzu used the solid lifters.... even on the 3.2... just seemed weird.... was there any real benifit?
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Postby 88SuperTrooper » Sun Jan 21, 2007 1:18 pm

Hack wrote:The 2.6 is a good little motor but it does require valve adjustments every 15,000 miles. There is a good write-up on adjusting the valvesin the articles section.

I would also replace the vacuum hoses as they are prone to leak. There are some photos of how the hoses should be routed in the articles section.

Be sure to check the timing belt. A blown timing belt can ruin that motor.

Finally, the heads on the 2.6L are very sensitive to heat. Blown head gaskets, cracked or warped heads are common. So keep and eye on your temp gauge and be sure to maintain the cooling system.


I thought the 2.6 was a non interferance motor, meaning that even if the timing belt goes then you dont have to worry about breaking things like cam .ect?
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Postby bendorfold » Sun Jan 21, 2007 1:31 pm

I thought the 2.6 was a non interferance motor
Nope!

http://www.forparts.com/daycoisuzu.htm
"Use it up. Wear it out. Make it do. Or do without." War Advertising Council: May, 1944

"It is better to keep silent and be thought a fool than to speak and remove all doubt." - maxim

mine - 1989 Trooper, 2.6L, 5-spd Manual, 170,742 miles, Stock - SOLD
my son - 1992 Trooper, Auto, DOHC, 225,000 miles (362,102 km), Stock -Still Good
mine - 1996 Trooper, 5-spd Manual, SOHC, 163,849 miles, Aisin Manual Hubs - Totaled
Isuzu mechanic during 1988-1992 Model Years
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Postby onetouch » Sun Jan 21, 2007 9:36 pm

bendorfold wrote:
I thought the 2.6 was a non interferance motor
Nope!

http://www.forparts.com/daycoisuzu.htm


They are interference for sure.

When I first got mine the timing belt had let go, causing all sorts of carnage.

Made it really cheap to buy, kinda spendy to repair.

Jim
Red-1 89 Trooper, 2.6, 5 speed, bunch of stuff.
Red-2 91 Trooper, 2.8, 5 speed, acquiring stuff.

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Postby Night Wolf » Mon Jan 22, 2007 7:24 pm

correction, intake valve timing is .006"

Interference they are.
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